NAKAMURA SACHIKO
Organization
Faculty of Science Department of Physics Associate Professor
Research Institute of Superconductor Science and Systems
（Concurrent）
School of Sciences Department of Physics（Concurrent）
Graduate School of Sciences Department of Physics（Concurrent）
Title
Associate Professor
Contact information
Profile
I conduct experimental research on quantum materials and quantum phenomena using optical techniques. By developing ultrafast and nonlinear spectroscopic methods such as terahertz time-domain spectroscopy and second harmonic generation (SHG), I aim to elucidate collective excitations, symmetry breaking, and topological solitons in superconductors and spin systems, from both temporal and energy perspectives.
Homepage
External link
ORCID
Research Areas
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Natural Science / Magnetism, superconductivity and strongly correlated systems
Degree
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Ph.D. in Physics
Research History
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2013–2014 東京大学理学系研究科物理学専攻 2014–2020 東京大学低温センター研究開発部門 2020–2022 東京大学低温科学研究センター研究開発部門
Education
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The University of Tokyo 大学院理学系研究科 物理学専攻博士課程
2010.4 - 2013.3
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The University of Tokyo 大学院理学系研究科 物理学専攻修士課程
2008.4 - 2010.3
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The University of Tokyo 理学部 物理学科
2006.4 - 2008.3
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The University of Tokyo 教養学部 理科Ⅰ類
2004.4 - 2006.3
Research Interests・Research Keywords
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Research theme： Terahertz time-domain spectroscopy on superconductors and development of spectroscopic techniques.
Keyword： terahertz spectroscopy, superconductors, low temperature
Research period： 2022.11
Awards
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The 6th Fumiko Yonezawa Memorial Award
2025.1 The Physical Society of Japan Novel Superconducting Dynamics Studied by Nonlinear Terahertz Spectroscopy
Sachiko Nakamura
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Best Poster Award
2017.8 LT28 poster award committee Best Poster Award in the 28th International Conference on Low Temperature Physics (LT28)
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学修奨励賞
2008.3 東京大学理学部 The School of Science Encouragement Award, the University of Tokyo
Papers
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Picosecond Trajectory of Two-Dimensional Vortex Motion in FeSe0.5Te0.5 Visualized by Terahertz Second Harmonic Generation Reviewed International journal
Sachiko Nakamura, Haruki Matsumoto, Hiroki Ogawa, Tomoki Kobayashi, Fuyuki Nabeshima, Atsutaka Maeda, and Ryo Shimano
Physical Review Letters 133 036004 2024.7
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Nonreciprocal Terahertz Second-Harmonic Generation in Superconducting NbN under Supercurrent Injection Reviewed International journal
Sachiko Nakamura, Kota Katsumi, Hirotaka Terai, Ryo Shimano
Physical Review Letters 125 ( 9 ) 097004-1 - 097004-5 2020.8
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Infrared Activation of the Higgs Mode by Supercurrent Injection in Superconducting NbN Reviewed International journal
Sachiko Nakamura, Yudai Iida, Yuta Murotani, Ryusuke Matsunaga, Hirotaka Terai, Ryo Shimano
Physical Review Letters 122 257001-1 - 257001-5 2019.6
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Possible quantum liquid crystal phases of helium monolayers Reviewed International journal
S. Nakamura, K. Matsui, T. Matsui, Hiroshi Fukuyama
PHYSICAL REVIEW B 94 ( 18 ) 2016.11
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A Simple Experimental Setup for Simultaneous Superfluid-Response and Heat-Capacity Measurements for Helium in Confined Geometries Reviewed International journal
Jun Usami, Ryo Toda, Sachiko Nakamura, Tomohiro Matsui, Hiroshi Fukuyama
Journal of Low Temperature Physics 208 ( 5-6 ) 457 - 466 2022.1 （ ISSN:0022-2291 ）
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Specific heat, thermal conductivity, and magnetic susceptibility of cyanate ester resins – An alternative to commonly used epoxy resins Reviewed International journal
Sachiko Nakamura, Takenori Fujii, Shoji Matsukawa, Masayuki Katagiri, Hiroshi Fukuyama
Cryogenics 95 76 - 81 2018.10
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Characterization of Pyrolytic Graphite Sheet: A New Type of Adsorption Substrate for Studies of Superfluid Thin Films Reviewed International journal
Sachiko Nakamura, Daisuke Miyafuji, Ryo Toda, Tomohiro Matsui, Hiroshi Fukuyama
Journal of Low Temperature Physics 192 ( 5-6 ) 1 - 16 2018.5
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4He permeation and H2O uptake of cyanate ester resins-an alternative to commonly used epoxy resins at low temperature Reviewed International journal
Sachiko Nakamura, Takenori Fujii, Shoji Matsukawa, Masayuki Katagiri, Hiroshi Fukuyama
Journal of Physics: Conference Series 969 ( 1 ) 2018.4
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Low temperature transport properties of pyrolytic graphite sheet Reviewed International journal
Sachiko Nakamura, Daisuke Miyafuji, Takenori Fujii, Tomohiro Matsui, Hiroshi Fukuyama
CRYOGENICS 86 118 - 122 2017.9
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Experimental Apparatus to Search for Supersolidity in Monolayer He on Graphite Reviewed International journal
Y. Kubota, R. Toda, M. Kamada, S. Nakamura, T. Matsui, Hiroshi Fukuyama
JOURNAL OF LOW TEMPERATURE PHYSICS 175 ( 1-2 ) 160 - 166 2014.4
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Preliminary heat capacity and vapor pressure measurements of 2D 4He on ZYX graphite Reviewed International journal
S. Nakamura, K. Matsui, T. Matsui, Hiroshi Fukuyama
Journal of Low Temperature Physics 171 ( 5-6 ) 711 - 717 2013.6
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Millikelvin LEED apparatus: a feasibility study Reviewed International journal
K. Matsui, S. Nakamura, T. Matsui, Hiroshi Fukuyama
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5 400 ( PART 4 ) 2012.12
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New Heat-Capacity Measurements of the Possible Order-Disorder Transition in the 4/7-phase of 2D Helium Reviewed International journal
S. Nakamura, K. Matsui, T. Matsui, Hiroshi Fukuyama
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5 400 ( PART 3 ) 2012.12
Presentations
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Observation of a low energy collective mode in FeSe by terahertz third-harmonic generation International conference
H. Matsumoto, S. Nakamura, H. Ogawa, T. Kobayashi, F. Nabeshima, A. Maeda, R. Shimano
MPI-UBC-UTokyo Workshop 2023 2023.12
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強磁性ニッケル/重金属二層系薄膜におけるテラヘルツ波発生
リハクユ, 小澤悟朗, 大日方初良, 古川佳弥, 木村崇, 中村祥子
第130回日本物理学会九州支部例会 2024.11
Professional Memberships
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THE PHYSICAL SOCIETY OF JAPAN
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THE PHYSICAL SOCIETY OF JAPAN
Committee Memberships
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日本物理学会九州支部 Organizer Domestic
2023.4 - 2024.3
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日本物理学会九州支部 支部幹事（庶務）
2023.4 - 2024.3
Committee type：Academic society
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Cryogenic Research Center, the University of Tokyo editorial committee of annual report
2015.4 - 2022.10
Committee type：Other
Academic Activities
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日本物理学会九州支部例会・例会担当
Role(s)： Planning, management, etc.
日本物理学会九州支部 2023.12
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Local Organizing Committee International contribution
QFS2018 (International Symposium of Quantum Fluids and Solids) （ Japan ） 2018.7
Research Projects
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テラヘルツ第2高調波発生を用いた超伝導状態に本質的な反転対称性の破れの研究
Grant number：25K00949 2025.4 - 2029.3
科学研究費助成事業 基盤研究(B)
Authorship：Principal investigator Grant type：Scientific research funding
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高強度サブテラヘルツ波パルスで操る超伝導ナノ磁気構造ダイナミクス
Grant number：JPMJPR2108 2021.10 - 2026.3
科学技術振興機構 さきがけ JST Strategic Basic Research Program (Ministry of Education, Culture, Sports, Science and Technology)
Authorship：Principal investigator Grant type：Contract research
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Grant number：20K14408 2020 - 2022
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Early-Career Scientists
Nakamura Sachiko
Authorship：Principal investigator Grant type：Scientific research funding
Supercurrents are dissipationless flows of superconducting electrons that break both time-reversal and space-inversion symmetries. Therefore, superconductors under supercurrent injection exhibit specific electromagnetic responses known as nonreciprocal transport phenomena, resulting from the symmetry breaking.
In this project, we investigated nonlinear optical responses of superconductors by observing the transmitted terahertz (THz) pulses for high-intensity and narrowband THz irradiations under three methods of supercurrent injection: (1) direct injection of a DC supercurrent, (2) dynamical induction of a transient current using THz pulses, and (3) static induction of a shielding current using weak magnetic fields. -
電流注入法による超伝導ヒッグスモードの観測方法の確立とその応用
Grant number：18K13496 2018 - 2019
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Early-Career Scientists
Authorship：Principal investigator Grant type：Scientific research funding
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2次元中性フェルミ粒子系の磁性と超流動
Grant number：15H03684 2015 - 2018
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid) Grant type：Scientific research funding
Class subject
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物理学ゼミナールB
2024.12 - 2025.2 Winter quarter
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物理学ゼミナール（R2以前入学者用）
2024.10 - 2025.3 Second semester
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物理学ゼミナールA
2024.10 - 2024.12 Fall quarter
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物性物理学Ⅲ
2024.4 - 2024.9 First semester
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力学概論
2024.4 - 2024.9 First semester
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最先端物理学A
2024.4 - 2024.7 Spring quarter
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物理学ゼミナールB
2023.12 - 2024.2 Winter quarter
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物理学総合実験（電子回路技術）
2023.10 - 2023.12 Fall quarter
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最先端物理学B
2023.4 - 2023.9 First semester
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力学概論
2023.4 - 2023.9 First semester
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物理学特別講義１２
2023.4 - 2023.9 First semester
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物理学総合実験（電子回路技術）
2023.4 - 2023.6 Spring quarter
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物理学入門ⅡB
2022.12 - 2023.2 Winter quarter
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基礎物理実験学・同実験B
2025.12 - 2026.2 Winter quarter
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基礎物理実験学・同実験（R2以前入学者用）
2025.10 - 2026.3 Second semester
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身の回りの物理学Ｂ
2025.10 - 2025.12 Fall quarter
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基礎物理実験学・同実験A
2025.10 - 2025.12 Fall quarter
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物性物理学Ⅲ
2025.4 - 2025.9 First semester
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物理学ゼミナールB
2024.12 - 2025.2 Winter quarter
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物理学ゼミナール（R2以前入学者用）
2024.10 - 2025.3 Second semester
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物理学ゼミナールA
2024.10 - 2024.12 Fall quarter
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物理学特別研究Ⅰ(１年）
2024.4 - 2025.3 Full year
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物性物理学Ⅲ
2024.4 - 2024.9 First semester
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力学概論
2024.4 - 2024.9 First semester
FD Participation
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2025.3 Role：Participation Title：【物理学科FD】物理学の教育・研究における生成AI の活用と課題
Organizer：Undergraduate school department
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2024.7 Role：Participation Title：九州大学アクティブラーニング教室 「物理学における反転授業の実践例」 （文部科学省教育関係共同利用拠点事業）
Organizer：[Undergraduate school/graduate school/graduate faculty]
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2024.4 Role：Participation Title：【全学FD】自殺防止メンタルヘルス研修会
Organizer：University-wide
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2024.2 Role：Participation Title：【物理学科FD】大学院の魅力創造に向けて
Organizer：Undergraduate school department
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2024.2 Role：Participation Title：【物理学科FD】大学院の魅力創造に向けて
Organizer：Undergraduate school department
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2023.4 Role：Participation Title：令和５年度 第１回全学ＦＤ（新任教員の研修）The 1st All-University FD (training for new faculty members) in FY2023
Organizer：University-wide
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2023.3 Role：Participation Title：【物理学科FD】物理数学の教育と効果的な演習に向けて
Organizer：Undergraduate school department
Other educational activity and Special note
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2025 Class Teacher 物理学科学年担任
Social Activities
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Role(s)：Appearance, Media coverage
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