YAJIMA TAKEAKI
Organization
Faculty of Information Science and Electrical Engineering Department of Electronics Associate Professor
School of Engineering Department of Electrical Engineering and Computer Science（Joint Appointment）
Graduate School of Information Science and Electrical Engineering Department of Electrical and Electronic Engineering（Joint Appointment）
Joint Graduate School of Mathematics for Innovation
（Joint Appointment）
Title
Associate Professor
Contact information
Tel
0928023759
Profile
Research and education on the fields of oxide thin films, electronic devices and circuits, and neuromorphic systems.
External link
Degree
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Doctor (Science)
Research History
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2012.8～2020.9 東京大学 大学院工学系研究科 マテリアル工学専攻 助教
Research Interests・Research Keywords
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Research theme：Edge information processing using small learning circuit
Keyword：echo state network, extreme learning machine, reservoir computing, reinforcement learning
Research period： 2022.10
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Research theme：Rhythmic control of switching circuits for low power application
Keyword：neuron circuit, asynchronous, DCDC converter, energy harvesting, analog CMOS
Research period： 2020.10
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Research theme：Short-term memory device based on protons and electrons
Keyword：oxide thin film, heterostructure, semiconductor, hydrogen
Research period： 2020.10
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Research theme：Digital temperature sensor using phase transition materials
Keyword：metal-insulator transition, VO2, vanadium oxide, thermistor, binary
Research period： 2020.10
Awards
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文部科学大臣表彰若手科学者賞
2022.4 文部科学省 酸化物機能に基づく省電力情報処理基盤の研究
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The Oxide Electronics Prize for Excellency in Research
2019.10 International Workshop on Oxide Electronics Excellency in Research in oxide electronics
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SSDM Young Researcher Award
2019.9 SSDM 2019 Young Researcher Award
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さきがけ交流会 ポスター賞
2019.1 科学技術振興機構 神経回路にヒントを得たsub-nW超低消費電力回路の開発
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第40回 応用物理学会論文賞
2018.9 日本応用物理学会 Reexamination of Fermi level pinning for controlling Schottky barrier height at metal/Ge interface.
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NF基金 研究開発奨励賞
2017.11 エヌエフ基金 酸化物の金属絶縁体転移を用いた低消費電力電子デバイスの研究
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応用物理学会 ポスター賞
2017.9 日本応用物理学会 Fabrication of Phase-Transition Neuron Firing by Joule Heat Accumulation
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The 8th Silicon Technology Division Award
2017.9 The 8th Silicon Technology Division Award
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ゲートスタック研究会 安田賞
2014.2 第１９回ゲートスタック研究会 VO2エピタキシャル薄膜を用いたVO2相転移の不均質性の抑制
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第26回 独創性を拓く 先端技術大賞
2012.7 フジサインケイビジネスアイ先端技術大賞 ペロブスカイト酸化物における界面ダイポールの設計とトランジスタへの応用 ～新たな酸化物デバイスを目指して～
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PCSI Young Scientist Award
2012.2 Conference on the Physics and Chemistry of Surfaces and Interfaces Young Scientist Award
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MRS Spring, Graduate Student Award
2011.4 Material Research Society Graduate Student Award
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PFシンポジウム ポスター賞
2011.3 酸化物ヘテロ界面の界面ダイポール制御によるバンドアラインメントの制御
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応用物理学会 講演奨励賞
2010.9 日本応用物理学会 (SrAlO3)－負電荷挿入によるSrRuO3/Nb:SrTiO3(001)ショットキー障壁高さの増大
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東京大学 応用物理学科 卒業論文賞
2007.3 東京大学 工学部 物理工学科 LaMnO3/SrTiO3界面の電子的・イオン的再構成
Papers
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Review of solid-state proton devices for neuromorphic information processing Invited Reviewed International journal
Satya Prakash Pati, Takeaki Yajima
Jpn. J. Appl. Phys. 63 ( 3 ) 030801 - 030801 2024.3
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Resonant frequency modulation in inductive vibration power generator via resistive impedance control
Takeaki Yajima
IEEE Transactions on Power Electronics 39 ( 1 ) 1269 - 1278 2023.12
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Zero-dimensionality of a scaled-down VO2 metal-insulator transition via high-resolution electrostatic gating Reviewed
Takeaki Yajima, Yusuke Samata, Satoshi Hamasuna, Satya Prakash Pati, Akira Toriumi
NPG Asia Materials 15 39-1 - 39-6 2023.6
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Controlling proton volatility in SiO2-capped TiO2 thin films for neuromorphic functionality
T. Yajima, S. P. Pati
Applied Physics Letters 120 ( 24 ) 241601 - 241601 2022.6
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Ultra-low-power switching circuits based on a binary pattern generator with spiking neurons Reviewed International journal
Takeaki Yajima
Scientific Reports 12 1150 2022.1
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Observation of the Pinch‐Off Effect during Electrostatically Gating the Metal‐Insulator Transition Reviewed International journal
8 2100842 - 2100842 2021.11
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Regulating phase transformation kinetics via redox reaction in ferroelectric Ge-doped HfO2 Reviewed
T. Yajima, T. Nishimura, S. Migita, T. Tanaka, K. Uchida, A. Toriumi
Applied Physics Letters 117 ( 18 ) 182902 - 182902 2020.11
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Modulation of VO 2 Metal–Insulator Transition by Ferroelectric HfO 2 Gate Insulator Reviewed
6 ( 5 ) 1901356 - 1901356 2020.5
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High-speed low-energy heat signal processing via digital-compatible binary switch with metal-insulator transitions. Reviewed
T. Yajima, T. Tanaka, Y. Samata, K. Uchida, A. Toriumi
International Electron Devices Meeting (IEDM) 903 - 906 2019.12
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Hydrogenation of the wide-gap oxide semiconductor as a room-temperature and 3D-compatible electron doping technique. Reviewed
T. Yajima, G. Oike, S. Yamaguchi, S. Miyoshi, T. Nishimura, A. Toriumi
AIP Advances 8 115133 2018.9
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Analog Spike Processing with High Scalability and Low Energy Consumption Using Thermal Degree of Freedom in Phase Transition Materials. Reviewed
T. Yajima, T. Nishimura, and A, Toriumi
VLSI (Technology) 18 27 - 28 2018.7
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Identifying the Collective Length in VO2 Metal-Insulator Transitions Reviewed
Takeaki Yajima, Tomonori Nishimura, Akira Toriumi
SMALL 13 ( 12 ) 2017.3
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Functional Passive Material VO2 for Analogue Signal Processing with High-Speed, Low Power, and Robust Performance Reviewed International journal
T. Yajima, T. Nishimura, A. Toriumi
Technical Digest - International Electron Devices Meeting, IEDM 2016.12
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Independent control of phases and defects in TiO2 thin films for functional transistor channels Reviewed
Takeaki Yajima, Go Oike, Tomonori Nishimura, Akira Toriumi
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE 213 ( 8 ) 2196 - 2202 2016.8
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Positive-bias gate-controlled metal-insulator transition in ultrathin VO2 channels with TiO2 gate dielectrics Reviewed
Takeaki Yajima, Tomonori Nishimura, Akira Toriumi
NATURE COMMUNICATIONS 6 2015.12
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Controlling band alignments by artificial interface dipoles at perovskite heterointerfaces Reviewed International journal
Yajima, Takeaki, Hikita, Yasuyuki, Minohara, Makoto, Bell, Christopher, Mundy, Julia A., Kourkoutis, Lena F., Muller, David A., Kumigashira, Hiroshi, Oshima, Masaharu, Hwang, Harold Y
Nature Communications 2015.6
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Drastic change in electronic domain structures via strong elastic coupling in VO2 films Reviewed
Takeaki Yajima, Yuma Ninomiya, Tomonori Nishimura, Akira Toriumi
PHYSICAL REVIEW B 91 ( 20 ) 2015.5
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Enhanced Electrical Transparency by Ultrathin LaAlO3 Insertion at Oxide Metal/Semiconductor Heterointerfaces Reviewed International journal
Yajima, Takeaki, Minohara, Makoto, Bell, Christopher, Kumigashira, Hiroshi, Oshima, Masaharu, Hwang, Harold Y., Hikita, Yasuyuki
Nano Letters 2015.2
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A heteroepitaxial perovskite metal-base transistor Reviewed
Takeaki Yajima, Yasuyuki Hikita, Harold Y. Hwang
NATURE MATERIALS 10 ( 3 ) 198 - 201 2011.3
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Design of The Ultra-Low-Power Driven VMM Configurations for μW Scale IoT Devices
2023.12
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Long-time-constant leaky-integrating oxygen-vacancy drift-diffusion FET for human-interactive spiking reservoir computing
Hisashi Inoue, Hiroto Tamura, Ai Kitoh, Xiangyu Chen, Zolboo Byambadorj, Takeaki Yajima, Yasushi Hotta, Tetsuya Iizuka, Gouhei Tanaka, Isao H. Inoue
2023 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits) 2023.6
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CMOS-based area-and-power-efficient neuron and synapse circuits for time-domain analog spiking neural networks Reviewed
Xiangyu Chen, Zolboo Byambadorj, Takeaki Yajima, Hisashi Inoue, Isao H. Inoue, Tetsuya Iizuka
Applied Physics Letters 122 074102 2023.2
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An ultra-compact leaky integrate-and-fire neuron with long and tunable time constant utilizing pseudo resistors for spiking neural networks
Xiangyu Chen, Takeaki Yajima, Isao H. Inoue, Tetsuya Iizuka
Japanese Journal of Applied Physics 61 ( SC ) SC1051 - SC1051 2022.5
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Self-synchronized Rectifier with Phase Information Extracted from Vibration Energy Harvester Reviewed
Hang Yin, Takeaki Yajima
Sensors and Materials 34 ( 5 ) 1899 - 1907 2022.5
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Atomistic simulation study of impacts of surface carrier scatterings on carrier transport in Pt nanosheets Reviewed
Takahisa Tanaka, Taro Kato, Takeaki Yajima, Ken Uchida
IEEE Electron Device Letters 1057 - 1060 2021.5
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Temperature dependence of resistivity increases induced by thiols adsorption in gold nanosheets
Taro Kato, Takahisa Tanaka, Takeaki Yajima, Ken Uchida
Japanese Journal of Applied Physics 60 ( SB ) SBBH13 - SBBH13 2021.2
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Impact of defects in self-assembled monolayer on humidity sensing by molecular functionalized transistors Reviewed
T. Tanaka, T. Yajima, K. Uchida
Jpn. J. Appl. Phys. 2020.3
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Understanding of Fermi level pinning at metal/germanium interface based on semiconductor structure Reviewed
X. Lu, T. Nishimura, T. Yajima, A. Toriumi
APEX 13 031003 2020.3
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Reaction of GeO2 with Ge and crystallization of GeO2 on Ge Reviewed
M. Xie, T. Nishimura, T. Yajima, A. Toriumi
J. Appl. Phys. 127 024101 2020.2
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Electron‐Doping Mottronics in Strongly Correlated Perovskite Reviewed
32 ( 6 ) 1905060 2019.12
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Heteroepitaxial vertical perovskite hot-electron transistors down to the monolayer limit. Reviewed
B. Kim, Y. Hikita, T. Yajima, H. Hwang
Nature Commun. 10 5312 2019.12
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Almost pinning-free bismuth/Ge and/Si interfaces Reviewed
Tomonori Nishimura, Xuan Luo, Soshi Matsumoto, Takeaki Yajima, Akira Toriumi
AIP ADVANCES 9 ( 9 ) 2019.9
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Delta-temperatural electronic transportation achieved in metastable perovskite rare-earth nickelate thin films Reviewed
Chen Jikun, Hu Haiyang, Yajima Takeaki, Wang Jiaou, Ge Binghui, Dong Hongliang, Jiang Yong, Chen Nuofu
JOURNAL OF MATERIALS CHEMISTRY C 7 ( 26 ) 8101 - 8108 2019.7
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Overcoming synthetic metastabilities and revealing metal-to-insulator transition & thermistor bi-functionalities for d-band correlation perovskite nickelates Reviewed
Chen Jikun, Hu Haiyang, Wang Jiaou, Yajima Takeaki, Ge Binghui, Ke Xinyou, Dong Hongliang, Jiang Yong, Chen Nuofu
MATERIALS HORIZONS 6 ( 4 ) 788 - 795 2019.4
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Inhomogeneous barrier heights at dipole-controlled SrRuO3/Nb:SrTiO3 Schottky junctions Reviewed
T. Yajima, M. Minohara, C. Bell, H. Y. Hwang, Y. Hikita
Applied Physics Letters 11 221603 2018.11
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Anomalous Spectral Shape Evolution of Ge Raman Shift in Oxidation of SiGe. Reviewed
Y Noma, W Song, T Nishimura, T Yajima, A Toriumi
IEEE Electron Devices Technology and Manufacturing (EDTM) 2018.3
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Strain Tuning in Complex Oxide Epitaxial Films Using an Ultrathin Strontium Aluminate Buffer Layer Reviewed
Di Lu, Yasuyuki Hikita, David J. Baek, Tyler A. Merz, Hiroki Sato, Bongju Kim, Takeaki Yajima, Christopher Bell, Arturas Vailionis, Lena F. Kourkoutis, Harold Y. Hwang
Physica Status Solidi - Rapid Research Letters 12 ( 3 ) 2018.3
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Rigidity enhancement of GeO2by Y doping for reliable Ge gate stacks Reviewed
Tomonori Nishimura, Xiaoyu Tang, Takeaki Yajima, Akira Toriumi
Electron Devices Technology and Manufacturing Conference (EDTM) 2018.3
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Potential Influence of Surface Atomic Disorder on Fermi-level Pinning at Metal/SiGe Interface Reviewed
X Luo, T Nishimura, T Yajima, A Toriumi
Electron Devices Technology and Manufacturing (EDTM) 2018.3
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Evolution of ferroelectric HfO2 in ultrathin region down to 3 nm Reviewed
Xuan Tian, Shigehisa Shibayama, Tomonori Nishimura, Takeaki Yajima, Shinji Migita, Akira Toriumi
Applied Physics Letters 112 ( 10 ) 2018.3
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Sub-nm EOT ferroelectric HfO2 on p+Ge with highly reliable field cycling properties Reviewed
X. Tian, L. Xu, S. Shibayama, T. Nishimura, T. Yajima, S. Migita, A. Toriumi
Technical Digest - International Electron Devices Meeting, IEDM 17 37.1.1 - 37.1.4 2018.1
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Dipole-correlated carrier transportation and orbital reconfiguration in strain-distorted SrNbxTi1-xO3/KTaO3 Reviewed
Jikun Chen, Xinyou Ke, Jiaou Wang, Takeaki Yajima, Haijie Qian, Song Sun
PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19 ( 44 ) 29913 - 29917 2017.11
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Reconsideration of Metal Work Function at Metal/Semiconductor Interface Reviewed
Nishimura Tomonori, Yajima Takeaki, Toriumi Akira
SEMICONDUCTOR PROCESS INTEGRATION 10 80 ( 4 ) 107 - 112 2017.10
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Kinetic pathway of the ferroelectric phase formation in doped HfO2 films Reviewed
Lun Xu, Tomonori Nishimura, Shigehisa Shibayama, Takeaki Yajima, Shinji Migita, Akira Toriumi
JOURNAL OF APPLIED PHYSICS 122 ( 12 ) 2017.9
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Thermal oxidation kinetics of germanium Reviewed
X. Wang, T. Nishimura, T. Yajima, A. Toriumi
APPLIED PHYSICS LETTERS 111 ( 5 ) 052101 2017.7
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n(+)Si/pGe Heterojunctions Fabricated by Low Temperature Ribbon Bonding With Passivating Interlayer Reviewed
Tony Chi Liu, Shoichi Kabuyanagi, Tomonori Nishimura, Takeaki Yajima, Akira Toriumi
IEEE ELECTRON DEVICE LETTERS 38 ( 6 ) 716 - 719 2017.6
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Thermodynamic understanding and analytical modeling of interfacial SiO2 scavenging in HfO2 gate stacks on Si, SiGe, and SiC Reviewed
Xiuyan Li, Takeaki Yajima, Tomonori Nishimura, Akira Toriumi
APPLIED PHYSICS LETTERS 110 ( 14 ) 2017.4
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Ultrahigh Thermoelectric Performance in SrNb0.2Ti0.8O3 Oxide Films at a Submicrometer-Scale Thickness Reviewed
Jikun Chen, Hongyi Chen, Feng Hao, Xinyou Ke, Nuofu Chen, Takeaki Yajima, Yong Jiang, Xun Shi, Kexiong Zhou, Max Dobeli, Tiansong Zhang, Binghui Ge, Hongliang Dong, Huarong Zeng, Wenwang Wu, Lidong Chen
ACS ENERGY LETTERS 2 ( 4 ) 915 - 921 2017.4
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General relationship for cation and anion doping effects on ferroelectric HfO2 formation Reviewed
L. Xu, S. Shibayama, K. Izukashi, T. Nishimura, T. Yajima, S. Migita, A. Toriumi
Technical Digest - International Electron Devices Meeting, IEDM 25.2.1 - 25.2.4 2017.1
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General relationship for cation and anion doping effects on ferroelectric HfO2 formation Reviewed International journal
L. Xu, S. Shibayama, K. Izukashi, T. Nishimura, T. Yajima, S. Migita, A. Toriumi
Technical Digest - International Electron Devices Meeting, IEDM 2016.12
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Ferroelectric phase stabilization of HfO2 by nitrogen doping Reviewed
Lun Xu, Tomonori Nishimura, Shigehisa Shibayama, Takeaki Yajima, Shinji Migita, Akira Toriumi
APPLIED PHYSICS EXPRESS 9 ( 9 ) 2016.9
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Anomalous electrical properties of Au/SrTiO3 interface Reviewed
Lun Xu, Takeaki Yajima, Tomonori Nishimura, Akira Toriumi
JAPANESE JOURNAL OF APPLIED PHYSICS 55 ( 8 ) 2016.8
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Reexamination of Fermi level pinning for controlling Schottky barrier height at metal/Ge interface Reviewed
Tomonori Nishimura, Takeaki Yajima, Akira Toriumi
APPLIED PHYSICS EXPRESS 9 ( 8 ) 2016.8
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Ferroelectricity of nondoped thin HfO2 films in TiN/HfO2/TiN stacks Reviewed
Tomonori Nishimura, Lun Xu, Shigehisa Shibayama, Takeaki Yajima, Shinji Migita, Akira Toriumi
JAPANESE JOURNAL OF APPLIED PHYSICS 55 ( 8 ) 2016.8
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Recent Progress of Junction Technology for Germanium CMOS Reviewed
Tomonori Nishimura, Choong Hyun Lee, Toshimitsu Nakamura, Takeaki Yajima, Kosuke Nagashio, Koji Kita, Akira Toriumi
2015 15TH INTERNATIONAL WORKSHOP ON JUNCTION TECHNOLOGY (IWJT) 65 - 68 2016.5
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Experimental evidence of zone-center optical phonon softening by accumulating holes in thin Ge Reviewed
Shoichi Kabuyanagi, Tomonori Nishimura, Takeaki Yajima, Akira Toriumi
AIP ADVANCES 6 ( 1 ) 2016.1
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Gate-bias dependent phonon softening observed in Ge MOSFETs Reviewed
Shoichi Kabuyanagi, Tomonori Nishimura, Takeaki Yajima, Akira Toriumi
ECS Transactions 69 ( 10 ) 75 - 80 2015.10
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Significance of Kinetic-linkage of Oxygen Vacancy with SiO2/Si Interface for SiO2-IL Scavenging in HfO2 Gate Stacks Reviewed
Xiuyan Li, Takeaki Yajima, Tomonori Nishimura, Akira Toriumi
2015 SILICON NANOELECTRONICS WORKSHOP (SNW) 2015.9
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Study of Si kinetics in interfacial SiO2 scavenging in HfO2 gate stacks Reviewed
Xiuyan Li, Takeaki Yajima, Tomonori Nishimura, Akira Toriumi
APPLIED PHYSICS EXPRESS 8 ( 6 ) 2015.6
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Effect of Free Carrier Accumulation or Depletion on Zone-center Vibrational Mode in Ge Reviewed
Shoichi Kabuyanagi, Tomonori Nishimura, Takeaki Yajima, Akira Toriumi
2015 SILICON NANOELECTRONICS WORKSHOP (SNW) 2015.6
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Nondestructive characterization of oxide/germanium interface by direct-gap photoluminescence analysis Reviewed
Shoichi Kabuyanagi, Tomonori Nishiumura, Takeaki Yajima, Akira Toriumi
APPLIED PHYSICS EXPRESS 8 ( 5 ) 2015.5
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Analytical Formulation of SiO<inf>2</inf>-IL scavenging in HfO<inf>2</inf>/SiO<inf>2</inf>/Si gate stacks - A key is the SiO<inf>2</inf>/Si interface reaction Reviewed
Xiuyan Li, Takeaki Yajima, Tomonori Nishimura, Kosuke Nagashio, Akira Toriumi
Technical Digest - International Electron Devices Meeting, IEDM 2015- ( February ) 21.2.1 - 21.2.4 2015.2
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Effect of Si substrate on interfacial SiO2 scavenging in HfO2/SiO2/Si stacks Reviewed
Xiuyan Li, Takeaki Yajima, Tomonori Nishimura, Kosuke Nagashio, Akira Toriumi
APPLIED PHYSICS LETTERS 105 ( 18 ) 2014.11
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Atomic-scale Planarization of Ge (111), (110) and (100) Surfaces Reviewed
Tomonori Nishimura, ChoongHyun Lee, Takeaki Yajima, Kosuke Nagashio, Akira Toriumi
2014 7TH INTERNATIONAL SILICON-GERMANIUM TECHNOLOGY AND DEVICE MEETING (ISTDM) 127 - 128 2014.8
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Kinetic Model for Scavenging of SiO2 Interface Layer in HfO2 Gate Stacks Reviewed
Xiuyan Li, Takeaki Yajima, Tomonori Nishimura, Kosuke Nagashio, Akira Toriumi
2014 IEEE SILICON NANOELECTRONICS WORKSHOP (SNW) 2014.6
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Atomically flat planarization of Ge(100), (110), and (111) surfaces in H-2 annealing Reviewed
Tomonori Nishimura, Shoichi Kabuyanagi, Wenfeng Zhang, Choong Hyun Lee, Takeaki Yajima, Kosuke Nagashio, Akira Toriumi
APPLIED PHYSICS EXPRESS 7 ( 5 ) 2014.5
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HfO2-assisted SiO2 reduction in HfO2/SiO2/Si stacks Reviewed
Xiuyan Li, Takeaki Yajima, Tomonori Nishimura, Kosuke Nagashio, Akira Toriumi
THIN SOLID FILMS 557 272 - 275 2014.4
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Visualizing the interfacial evolution from charge compensation to metallic screening across the manganite metal-insulator transition Reviewed
Julia A. Mundy, Yasuyuki Hikita, Takeaki Hidaka, Takeaki Yajima, Takuya Higuchi, Harold Y. Hwang, David A. Muller, Lena F. Kourkoutis
NATURE COMMUNICATIONS 5 2014.3
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High electron mobility (16 cm2/Vsec) FETs with high on/off ratio (10^6) and highly conductive films (10^2 S/cm) by chemical doping in very thin (∼20 nm) TiO2 films on thermally grown SiO2 Reviewed
2013.12
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Atomically Flat Germanium (111) Surface by Hydrogen Annealing Reviewed
T. Nishimura, S. Kabuyanagi, C. H. Lee, T. Yajima, K. Nagashio, A. Toriumi
ULSI PROCESS INTEGRATION 8 58 ( 9 ) 201 - 206 2013.10
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Coexistence of two-dimensional and three-dimensional Shubnikov–de Haas oscillations in Ar+-irradiated KTaO3 Reviewed
88 ( 8 ) 085102 2013.8
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Hot electron transport in a strongly correlated transition-metal oxide Reviewed
Kumari Gaurav Rana, Takeaki Yajima, Subir Parui, Alexander F. Kemper, Thomas P. Devereaux, Yasuyuki Hikita, Harold Y. Hwang, Tamalika Banerjee
SCIENTIFIC REPORTS 3 2013.2
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ペロブスカイト酸化物における界面ダイポールの設計とトランジスタへの応用
矢嶋赳彬
先端技術大賞 2012.6
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Reentrant insulating state in ultrathin manganite films Reviewed
Bongju Kim, Daeyoung Kwon, Takeaki Yajima, Christopher Bell, Yasuyuki Hikita, Bog G. Kim, Harold Y. Hwang
APPLIED PHYSICS LETTERS 99 ( 9 ) 2011.8
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Charge Writing at the LaAlO3/SrTiO3 Surface Reviewed
Yanwu Xie, Christopher Bell, Takeaki Yajima, Yasuyuki Hikita, Harold Y. Hwang
NANO LETTERS 10 ( 7 ) 2588 - 2591 2010.7
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Mn3O4 precipitates in laser-ablated manganite films Reviewed
T. Higuchi, T. Yajima, L. Fitting Kourkoutis, Y. Hikita, N. Nakagawa, D. A. Muller, H. Y. Hwang
APPLIED PHYSICS LETTERS 95 ( 4 ) 043112 2009.7
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Termination control of the interface dipole in La0.7Sr0.3MnO3/Nb:SrTiO3 (001) Schottky junctions Reviewed
Yasuyuki Hikita, Mitsuru Nishikawa, Takeaki Yajima, Harold Y. Hwang
PHYSICAL REVIEW B 79 ( 7 ) 2009.2
Books
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環境発電ハンドブック 第２版
矢嶋赳彬（ Role： Joint author）
エヌ・ティー・エス 2022.4
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環境発電ハンドブック 第２版
矢嶋赳彬
エヌ・ティー・エス 2021.10
Presentations
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酸化物相転移とプロトンを駆使したニューロモルフィックデバイス設計 Invited
矢嶋赳彬
第258回JOEM研究会 2023.12
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Smart energy extraction from energy harvesters using timing-based asynchronous digital circuits Invited
Takeaki Yajima
IEEE-NEMS2022 2022.4
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Low-power circuits for energy harvesters based on spiking-neuron delay elements Invited
Takeaki Yajima
EuMW2021 2022.4
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持続可能社会のためのニューロモルフィックデバイス設計 Invited
矢嶋赳彬
学振R031ハイブリッド量子ナノ技術委員会 第7回研究会 2022.8
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環境発電の普及に向けた電源回路技術の動向について Invited
矢嶋赳彬
SDRJ委員会 2023.1
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プロトンを用いたニューロモルフィック情報素子の設計 Invited
矢嶋赳彬
第70回応用物理学会春季学術講演会 2023.3
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Designing neuromorphic devices using protons Invited
Takeaki Yajima
IWDTF 2023 (2023, Kanazawa, Japan) 2023.10
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スパイキングニューラルネットを用いたエッジAIと環境発電のへの応用 Invited
矢嶋赳彬
エネルギーハーベスティングコンソーシアム総会 (2023, Tokyo) 2023.6
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固体プロトン素子を用いたニューロモルフィック機能設計 Invited
矢嶋赳彬
第85回固体イオニクス研究会 (2023, Tokyo) 2023.7
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酸化物ヘテロ構造とプロトンを用いたニューロモルフィック素子 Invited
矢嶋赳彬
第84回応用物理学会秋季講演会 (2023, Kumamoto) 2023.9
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プロトンを用いたニューロモルフィック情報処理 Invited
矢嶋赳彬
新材料・新原理で築く ニューロモルフィックシステム (2023, Osaka) 2023.8
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ニューロン回路と材料機能を用いた超低消費電力化技術の研究 Invited
矢嶋赳彬
Neumorphランチョンセミナー 2021.10
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Ultra-sharp three-terminal switch using nano-scale phase transition material Invited
Takeaki Yajima
34th International Microprocesses and Nanotechnology Conference (MNC 2021) 2021.10
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非同期デジタル制御による振動発電用回路 Invited
矢嶋赳彬
環境発電関連技術の最先端（応用物理学会エネルギーハーベスティング研究グループ） 2021.11
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Codesign of materials and circuits for neuromorphic edge computing Invited
Takeaki Yajima
2021.12
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Next-generation switching devices based on metal-insulator transitions Invited
Takeaki Yajima
ISPlasma2022 2022.3
MISC
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神経回路のアナロジーに基づく省エネエレクトロニクス Reviewed
矢嶋 赳彬
電気学会誌 2024.2
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スパイキングニューロン回路を用いた低消費電力IoT回路技術
矢嶋赳彬
機能材料 2021.3
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金属絶縁体転移材料を利用した回路技術の研究 Reviewed
矢嶋 赳彬
電子情報通信学会 和文論文誌C 2020.9
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ペロブスカイト酸化物へテロ界面における界面ダイポールを用いたバンドオフセット制御
矢嶋赳彬、疋田育之、簑原誠人、Christopher BELL、組頭広志、尾嶋正治、Julia A. MUNDY、Lena FITTING KOURKOUTIS、David. A. MULLER、Harold HWANG
2012.4
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Engineering Artificial Interface Dipoles at Oxide Heterointerfaces.
T. Yajima, Y. Hikita, M. Minohara, C. Bell, J. A. Mundy, L. Fitting Kourkoutis, D. A. Muller, H. Kumigashira, M. Oshima, H. Y. Hwang
PF Activity Report 2015.6
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Engineering Artificial Interface Dipoles at Oxide Heterointerfaces
T. Yajima, Y. Hikita, M. Minohara, C. Bell, J. A. Mundy, L. Fitting Kourkoutis, D. A. Muller, H. Kumigashira, M. Oshima, and H. Y. Hwang
PF Activity Report 2015.4
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ペロブスカイト酸化物における界面ダイポールの設計とトランジスタへの応用 Reviewed
矢嶋赳彬
独創性を拓く 先端技術大賞 2012.6
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Controlling Band Alignments by Engineering Interface Dipoles at Perovskite Oxide Heterointerfaces.
T. Yajima, Y. Hikita, M. Minohara, C. Bell, H. Kumigashira, M. Oshima, J. A. Mumdy, L. F. Kourkoutis, D. A. Muller, H. Hwang
PF News 2012.1
Industrial property rights
| Patent | Number of applications: 14 | Number of registrations: 1 |
| Utility model | Number of applications: 0 | Number of registrations: 0 |
| Design | Number of applications: 0 | Number of registrations: 0 |
| Trademark | Number of applications: 0 | Number of registrations: 0 |
Professional Memberships
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IEEE
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JSAP Silicon Technology Devision
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JAPANESE NEURAL NETWORK SOCIETY
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Material Research Society
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THE JAPAN SOCIETY OF APPLIED PHYSICS
Committee Memberships
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International Conference on Solid State Devices and Materials (SSDM) Organizer Foreign country
2024.1 - 2025.9
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応用物理学会 中分類（酸化物エレクトロニクス） プログラム委員 Domestic
2023.4 - 2025.3
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ニューロモルフィックAIハードウェア研究センター 外部委員 Domestic
2021.7 - Present
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プログラム委員 Foreign country
2020.10 - 2023.3
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The System Device Roadmap Committee of Japan (SDRJ), More than Moore working group (MtM) Organizer Domestic
2019.12 - Present
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Organizer Domestic
2019.11 - 2023.4
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エネルギーハーベスティングコンソーシアム 正式オブザーバ Domestic
2018.4 - Present
Academic Activities
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オーガナイザ
脳機能から考えるレザバーコンピューティングの未来 （ オンライン ） 2021.8
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オーガナイザ
バイオミメティック情報処理の最前線 （ 大阪 ） 2020.11
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Executive Comittee International contribution
2018 International Conference on Solid State Devices and Materials （ Tokyo Japan ） 2018.9
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代表企画者
第23回 電子デバイス界面テクノロジー研究会 企画セッション「ポストディープラーニングに向けたニューロチップの基盤技術」 （ 三島 ） 2018.1
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代表世話人
春季応用物理学会 シンポジウム「次世代ニューロモルフィックハードウェアにおける機能性酸化物の役割」 （ 横浜 ） 2017.3
Research Projects
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自立センサノードのためのバイオミメティック汎用電源回路
2022 - 2027
産業技術研究助成事業 (経済産業省)
Authorship：Principal investigator Grant type：Contract research
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スパイキングネットによるエッジでのリアルタイム学習基盤
2019 - 2024
戦略的創造研究推進事業 (文部科学省)
Authorship：Coinvestigator(s) Grant type：Contract research
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抵抗変化素子を活用した環境発電用回路技術の創成
2017 - 2020
戦略的創造研究推進事業 (文部科学省)
Authorship：Principal investigator Grant type：Contract research
Educational Activities
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Teaching Fundamentals of Electromagnetism and Application of Quantum Mechanics I for bachelor course. Teaching Neuromorphic Hardware and Group Research Proposal for EEE in graduate school.
Class subject
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電磁気学基礎
2023.12 - 2024.2 Winter quarter
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電気電子工学演示Ⅱ
2023.10 - 2024.3 Second semester
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電気電子工学読解Ⅱ
2023.10 - 2024.3 Second semester
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電磁気学基礎
2023.10 - 2023.12 Fall quarter
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Neuromorphic Hardware II
2023.6 - 2023.8 Summer quarter
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ニューロコンピューティング特論Ⅱ
2023.6 - 2023.8 Summer quarter
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ニューロモルフィックハードウェア特論Ⅱ
2023.6 - 2023.8 Summer quarter
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電気工学基礎Ⅱ
2023.6 - 2023.8 Summer quarter
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構成エレクトロニクス特別講究
2023.4 - 2024.3 Full year
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電気電子工学特別研究Ⅱ
2023.4 - 2024.3 Full year
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電気電子工学特別研究Ⅰ
2023.4 - 2024.3 Full year
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電気電子工学特別演習
2023.4 - 2024.3 Full year
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Advanced Research in Constructive Electronics
2023.4 - 2024.3 Full year
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Advanced Seminar in Electrical and Electronic Engineering
2023.4 - 2024.3 Full year
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Advanced Research in Electrical and Electronic Eng II
2023.4 - 2024.3 Full year
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Advanced Research in Electrical and Electronic Engineering I
2023.4 - 2024.3 Full year
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電気電子工学演示Ⅰ
2023.4 - 2023.9 First semester
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電気電子工学読解Ⅰ
2023.4 - 2023.9 First semester
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電気工学基礎
2023.4 - 2023.9 First semester
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ニューロコンピューティング特論Ⅰ
2023.4 - 2023.6 Spring quarter
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量子力学応用Ⅰ
2023.4 - 2023.6 Spring quarter
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量子力学応用Ⅰ
2023.4 - 2023.6 Spring quarter
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電気工学基礎Ⅰ
2023.4 - 2023.6 Spring quarter
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電磁気学基礎
2022.12 - 2023.2 Winter quarter
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電磁気学基礎
2022.10 - 2022.12 Fall quarter
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ニューロモルフィックハードウェア特論Ⅱ
2022.6 - 2022.8 Summer quarter
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Neuromorphic Hardware II
2022.6 - 2022.8 Summer quarter
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電気電子工学企画演習
2022.4 - 2022.9 First semester
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工学概論（Ⅰ群）
2022.4 - 2022.9 First semester
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量子力学大意
2022.4 - 2022.9 First semester
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電気電子工学特別研究第ニ 1G
2022.4 - 2022.9 First semester
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電気電子工学読解Ⅰ
2022.4 - 2022.9 First semester
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電気電子工学演示Ⅰ
2022.4 - 2022.9 First semester
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電気電子工学研究演示(第1ｸﾞﾙｰﾌﾟ)
2022.4 - 2022.9 First semester
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Group Research Proposal for EEE
2022.4 - 2022.9 First semester
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Survey in EEE Studies(Group1)
2022.4 - 2022.9 First semester
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ニューロモルフィックハードウェア特論Ⅰ
2022.4 - 2022.6 Spring quarter
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Neuromorphic Hardware I
2022.4 - 2022.6 Spring quarter
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量子力学応用Ⅰ
2022.4 - 2022.6 Spring quarter
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電磁気学基礎
2021.12 - 2022.2 Winter quarter
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電磁気学基礎
2021.10 - 2022.3 Second semester
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電気電子工学読解Ⅱ
2021.10 - 2022.3 Second semester
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電気電子工学研究調査(第1ｸﾞﾙｰﾌﾟ)
2021.10 - 2022.3 Second semester
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電磁気学基礎
2021.10 - 2021.12 Fall quarter
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ニューロモルフィックハードウェア特論Ⅱ
2021.6 - 2021.8 Summer quarter
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Neuromorphic Hardware II
2021.6 - 2021.8 Summer quarter
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ニューロモルフィックハードウェア特論
2021.4 - 2021.9 First semester
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電気電子工学読解Ⅰ
2021.4 - 2021.9 First semester
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[M2]電気電子工学演習第三
2021.4 - 2021.9 First semester
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量子力学応用１
2021.4 - 2021.6 Spring quarter
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Neuromorphic Hardware I
2021.4 - 2021.6 Spring quarter
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量子力学応用Ⅰ
2021.4 - 2021.6 Spring quarter
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ニューロモルフィックハードウェア特論Ⅰ
2021.4 - 2021.6 Spring quarter
FD Participation
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2022.1 Role：Participation Title：【シス情FD】シス情関連の科学技術に対する国の政策動向（に関する私見）
Organizer：[Undergraduate school/graduate school/graduate faculty]
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2021.4 Role：Participation Title：令和３年度 第１回全学ＦＤ（新任教員の研修）
Organizer：University-wide
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2021.3 Role：Participation Title：学習支援システム（M2B）講習会（オンライン開催）◇初級編・中・上級編◇13:00～15:00
Organizer：University-wide
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2020.12 Role：Participation Title：Moodle&MS Teams連携によるオンライン講義実施報告(Youtube Prezi Powerpoint Wolframcloud そして TeX)
Organizer：[Undergraduate school/graduate school/graduate faculty]
Other educational activity and Special note
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2023 Class Teacher
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2022 Class Teacher
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2021 Class Teacher
Media Coverage
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九大、生物の神経回路に学ぶ超省エネIoT制御技術を確立 Newspaper, magazine
日本経済新聞 2022.1
Activities contributing to policy formation, academic promotion, etc.
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2023.3 応用物理学会シンポジウム「脳と非生体型自律分散システムにおける情報処理・創造の最前線」
世話人
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2021.4 - 2021.8 第２回トータルバイオミメティクス研究会「脳機能から考えるレザバーコンピューティングの未来」
代表企画者
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2020.5 - 2022.3 応用物理学会 若手チャプタ
副代表
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2018.11 - 2019.3 International Workshop on Materials Science & Device Physics for Advanced Electron Devices
実行委員
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2017.10 - 2018.9 SSDM 2018
実行委員
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2017.6 - 2018.1 第23回 電子デバイス界面テクノロジー研究会 企画セッション"ポストディープラーニングに向けたニューロチップの基盤技術"
代表企画者
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2016.9 - 2017.3 春季応用物理学会 2017 シンポジウム "次世代ニューロモルフィックハードウェアにおける機能性酸化物の役割"
代表世話人