Kyushu University [Hideki Yayama (Professor) Faculty of Arts and Science, Division for Arts and Science]

Department of Physics
Graduate School of Sciences

Department of Physics
School of Sciences

092-642-3892

Doctor of Engineering

Low temperature physics, Cryogenics

Research
1. Low dimensional electron system on liquid helium
2. Novel cryogen free refrigerator in cryogenic temperatures

Education
1. Low temperature Physics
2. Electromagnetism
3. Thermodynamics
4. Elemental mechanics
5. Elemental course of physical experiments

Research Interests

Low dimensional electron system on liquid helium
keyword : low temperature, liquid helium, low dimensional electrons
2007.04～2013.03.
Development of novel cryogenic refrigerators
keyword : dilution refrigerator, liquid helium, GM refrigerator, pulse-tube refrigerator, magnetic refrigerator
2007.04～2013.03.

Current and Past Project

Electrical property of low dimensional electron system on liquid helium
Development of heat switch for cryogen-free continuously operating magnetic refrigerator
Development of Liquid Helium Free Dilution Refrigerator and establishment of company to sell that.

Academic Activities

Books

Show All Books >>

1.	Production and measurement of low and ultra-low temperatures. .
2.	Textbook for fundamental course of experimental physics.

Papers

Show All Papers >>

1.	Ali G. Hafez, Essam Ghamry, Hideki Yayama and Kiyohumi Yumoto,Systematic examination of the Geomagnetic Storm Sudden Commencement using multi resolution analysis,Adv. Space Res.,Vol.Vol. 51,pp.pp. 39-49,2013.01. .
2.	Ali G. Hafez, Essam Ghamry, Hideki Yayama and Kiyohumi Yumoto,Un-decimated discrete wavelet transform based algorithm for extraction of geomagnetic storm sudden commencement onset of high resolution records,Comp. Geosci.,Vol.Vol. 51,pp.pp. 143-152,2013.01. .
3.	S. Yamanaka, T. Arai, A. Sawada, A. Fukuda and H. Yayama,Incompressible edge wave in classical two-dimensional electron liquid on helium surface,Europhys. Lett.,Vol.100,No.17009,pp.pp. 1-5,2012.10. .
4.	T. Arai, S. Yamanaka, H. Yayama, A. Sawada and A. Fukuda,Linewidth broadening in edge-magnetoplasmon resonance of helium surface state electrons,J. Phys.: C.S.,Vol.Vol. 400,No.No. 042001,pp.pp. 1-4,2012.12. .
5.	Ryoma Kobayashi and Hideki Yayama,Mobility of electrons on helium film capillary condensed on two dimensionally corrugated surface of dielectric substrate,J. Phys.: C.S.,Vol.Vol. 400,No.No. 042034,pp.pp. 1-4,2012.09. .
6.	Ali G. Hafez, Essam Ghamry, Hideki Yayama and Kiyohumi Yumoto,A wavelet spectral analysis technique for automatic detection of geomagnetic sudden commencements,IEEE Trans. Geosci. Rem. Sens.,Vol.Vol. 50,pp.pp. 4503-4512,2012.12. .
7.	Akihiro Mitsuda, Suguru Hamano, Nobutaka Araoka, Hideki Yayama, and Hirofumi Wada,Pressure-Induced Valence Transition in Antiferromagnet EuRh2Si2,J. Phys. Soc. Jpn.,Vol.81,pp.023709-1~4,2012.01. .
8.	T Arai, S Yamanaka, H Yayama, A Fukuda and A Sawada,Conductivity Measurement of Helium Surface Electrons in the Coexistence of Adsorbed 2D Atomic Hydrogen Gas,J. Phys.: C.S.,150 (2009) 032129-1~4,2009.04. .
9.	Hideki Yayama and Michihiro Yoshimura,Installation of a Superconducting Magnet in a Cryogen-Free Dilution Refrigerator,J. Phys.: C.S.,150 (2009) 012056-1~4,2009.04. .
10.	Toshikazu Arai, Hideki Yayama and Kimitoshi Kono,Electron attachment to atomic hydrogen on the surface of liquid 4He,Low Temp. Phys.,34 (2008) pp.397-403,2008.04. .
11.	R. Kobayashi, I.B. Berkutov, S. Yamanaka, T. Arai and H. Yayama,Charge Transport in Quasi-One-Dimensional Electron System on Liquid Helium,J. Phys. Soc. Jpn.,76 (2007) Supp. A, pp.169-197,2007.01. .
12.	V.A. Nikolaenko, I.B. Berkutov, Yu.Z. Kovdrya, R. Kobayashi and H. Yayama,Localization and Ordering of Carriers in a Quasi-One-Dimensional Electron System on Liquid Helium,J. Low Temp. Phys.,148 (2007) pp.175-179,2007.01. .
13.	Shuji Yamanaka, Toshikazu Arai Hideki Yayama,Electrical Conductance of Single Channel 1D Electron System on Liquid Helium,AIP CP850,(2006) pp.1460-1461,2005.01. .
14.	Toshikazu Arai, Tomoyuki Mitsui and Hideki Yayama,Electron Attachment Reaction, Rates in 2D Atomic Hydrogen-Electron Mixed System on Liquid Helium Surface,AIP CP850,(2006) pp.83-84,2005.01. .
15.	Hideki Yayama,Effect of Magnetic Field on Performance of ErNi0.9Co0.1 Regenerator in Gifford-McMahon Refrigerator,,AIP CP850,(2006) pp.157-158,2005.01. .
16.	T. Arai, T. Mitsui and H. Yayama,Spin-polarization effect on electron attachment to atomic hydrogen on liquid helium surface,Journal of Low Tepreature Physics,vol. 138, Nos. 1/2, 445-450, 2005,2005.01. .
17.	Toshikazu Arai, Tomoyuki Mitsui and Hideki Yayama,Helium surface electron attachment to atomic hydrogen in applied magnetic field,Journal of Physics and Chemistry of Solids,66 (2005) 1549-1551,2005.01. .
18.	Hideki Yayama and Igor B. Berkutov,Temperature dependence of electrical conductance in 1D electron system formed on liquid helium surface,Physica E,vol. 18 , pp. 177-178, 2003,2003.01. .
19.	H. Yayama, Y. Hatta, and A. Tomokiyo,Hybrid cryogenic refrigerator combining magnetic- and gas-cooling system,Physica B: Condensed Matter,284-288 (2000) 2016-2017,2000.01. .
20.	H. Yayama, I.B. Berkutov, and A. Tomokiyo,Electrical conductivity of quasi-one-dimensional electrons on helium film, H. Yayama, I.B. Berkutov, and A. Tomokiyo,Physica B: Condensed Matter,284-288 (2000) 1914-1915,2000.01. .
21.	H. Yayama, H. Hatta, Y. Makimoto, and A. Tomokiyo,Hybrid Cryogenic Refrigerator: Combination of Brayton Magnetic-Cooling and Gifford-McMahon Gas-Cooling System,Jpn. J. Appl. Phys.,39 (2000) 4220-4224,2000.01. .
22.	Yu. Z. Kovdrya, V.A. Nikolaenko, H. Yayama, A. Tomokiyo, O.I. Kirichek, and I.B. Berkutov,Mobility and Localization of Carriers in a Quasi-One-Dimensional Electron System over Liquid Helium,J. Low Temp. Phys.,110 (1998) 191-198,1998.01. .
23.	A.M.C. Valkering, H. Yayama, and R.W. van der Heijden,Mobility of Electrons on a Helium Film Capillary Condensed on a 2D-grating,J. Low Temp. Phys.,113 (1998) 873-878,1998.01. .
24.	V.A. Nikolaenko, Yu. Z. Kovdrya, H. Yayama, and A. Tomokiyo,Mobility and localization of charge carriers in a quasi-one-dimensional electron system over liquid helium,Low Temp. Phys.,23 (1997) 482-486,1997.01. .
25.	H. Yayama, A. Tomokiyo, O.I. Kirichek, I.B. Berkutov, and Yu. Z. Kovdrya,Carrier transport in quasi-one-dimensional electron system over liquid helium under strong localization conditions,Low Temp. Phys.,23 (1997) 878-881,1997.01. .
26.	H. Yayama and A. Tomokiyo,Anisotropy of conductance in quasi-one-dimensional electron system on liquid helium,Czech. J. Phys.,46 (1996) 353-354,1996.01. .
27.	H. Yayama, Y. Hatta, A. Tomokiyo, M. Okamura, Y. Tokai, A. Takahashi, and T. Hashimoto,Specific Heat of ErNi in Magnetic Fields and Its Performance as Regenerator Material in Gifford-McMahon Refrigerator at Cryogenic Temperatures,Jpn. J. Appl. Phys.,35 (1996) 5545-5549,1996.01. .
28.	H. Yayama and A. Tomokiyo,Electrical Resistivity anomaly and specific heat in gadolinium-hydrogen solid solution,J. Alloys Compounds,192 (1993) 185-187,1993.01. .
29.	Y. Tokai, A. Takahashi, M. Sahashi, T. Hashimoto, H. Yayama and A. Tomokiyo,Magnetic Field Influence on Er3Ni Specific Heat,Jpn. J. Appl. Phys.,31 (1992) 3332-3335,1992.01. .
30.	H. Yayama and A. Tomokiyo,Magnetic Property of Gadolinium Hydrides,,Adv. Cryog. Eng. Materials,36 (1991) 293-298.,1991.01. .
31.	H. Yayama, A. Tomokiyo and K. Hirakawa,Activation Energies for Electrode Reaction of Metal Hydride in Alkaline Aqueous Solution,Jpn. J. Appl. Phys.,28 (1989) 530-534,1989.01. .
32.	H. Yayama and A. Tomokiyo,Magnetic Susceptibility of Gd-H System,Proc. 10th Int. Workshop on Rare-Earth Magnets and Their Applications, Kyoto,1989, p. 213-219,1989.01. .
33.	T. Ikari, S. Shigetomi, Y. Koga, H. Nishimura, H. Yayama and A. Tomokiyo,Low-temperature photoacoustic spectra of BiI3 single crystals,Phys. Rev.,B37 (1988) 886-890,1988.01. .
34.	T. Hashimoto, T. Yazawa, R. Li, T. Kuzuhara, K. Matsumoto, H. Nakagome, M. Takahashi, M. Sahashi, K. Inomata, A. Tomokiyo and H. Yayama,Recent Progress in Magnetic Refrigeration Studies,Adv. Cryog. Eng.,33 (1988) 733-741,1988.01. .
35.	T. Hashimoto, T. Kuzuhara, K. Matsumoto, M. Sahashi, K. Inomata, A. Tomokiyo and H. Yayama,Investigation of the Magnetic Refrigerant for the Ericsson Magnetic Refrigerator,Jpn. J. Appl. Phys.,26 (1987) Suppl. 26-3, p. 1673-1674,1987.01. .
36.	M. Sahashi, H. Niu, Y. Tokai, K. Inomata, T. Hashimoto, K. Matsumoto, A. Tomokiyo and H. Yayama,New Complex Magnetic Material for Ericsson Magnetic Refrigerator,Jpn. J. Appl. Phys.,26 (1987) Suppl. 26-3, p. 1677-1678.,1987.01. .
37.	T. Hashimoto, T. Kuzuhara, K. Matsumoto, M. Sahashi, K. Inomata, A. Tomokiyo and H. Yayama,A New Method for Producing the Magnetic Refrigerant Suitable for the Ericsson Magnetic Refrigeration,IEEE Trans. Mag.,MAG-23 (1987) 2847-2849,1987.01. .
38.	H. Yayama, A. Tomokiyo, T. Hashimoto, T. Kuzuhara, R. Li, M. Sahashi and K. Inomata,Specific Heat of Regenerative Material RNi2 System,IEEE Trans. Mag.,MAG-23 (1987) 2850-2852,1987.01. .
39.	M. Sahashi, H. Niu, Y. Toka, K. Inomata, T. Hashimoto, T. Kuzuhara, A. Tomokiyo and H. Yayama,Specific Heat and Magnetic Entropy Associated with Magnetic Ordering in Al-Rich RAl2 Sintered Compounds,IEEE Trans. Mag.,MAG-23 (1987) 2853-2855,1987.01. .
40.	H. Yayama, K. Hirakawa and T. Tomokiyo,Equilibrium Potential and Exchange Current Density of Metal Hydride Electrode,Jpn. J. Appl. Phys.,25 (1986) 739-742,1986.01. .
41.	T. Hashimoto, K. Matsumoto, T. Numazawa, T. Kuzuhara, A. Tomokiyo and H. Yayama, T. Goto, S. Todo and M. Sahashi,Investigation on the Possibility of RAl2 System as the Refrigerants in an Ericsson Type Magnetic Refrigerator,Adv. Cryog. Eng. Materials,32 (1986) 279-286,1986.01. .
42.	A. Tomokiyo, H. Yayama, H. Wakabayashi, T. Kuzuhara, T. Hashimoto, M. Sahashi and K. Inomata,Specific Heat and Entropy of RNi2 (R: Rare Earth Heavy Metals) in Magnetic Field,Adv. Cryog. Eng. Materials,32 (1986) 295,1986.01. .
43.	A. Tomokiyo, H. Yayama, H. Wakabayashi, T. Kuzuhara, T. Hashimoto, M. Sahashi and K. Inomata,Magnetic Entropy of the Mixed and Sintered Compound of the RAl2 System,Proc. 11th Int. Cryog. Eng. Conf., Berlin-West,1986, p. 280,1986.01. .
44.	T. Hashimoto, T. Kuzuhara, M. Sahashi, K. Inomata, A. Tomokiyo and H. Yayama,New application of complex magnetic materials to the magnetic refrigerant in an Ericsson magnetic refrigerator,J. Appl. Phys.,62 (1987) 3873-3878,1986.01. .
45.	Hideki Yayama, Kazuyoshi Hirakawa, Akihisa Tomokiyo,Electrochemical Reaction and Electrode Potential of Metal-Hydride in Alkaline Aqueous Solution,Mem. Fac. Eng. Kyushu Univ.,Vol.45,No.1,pp.25-35,1985.03. .
46.	A. Tomokiyo, H. Yayama, T. Hashimoto, T. Aomine, M. Nishida and S. Sakaguchi,Specific heat and entropy of dysprosium gallium garnet in magnetic fields,Cryogenics,25 (1985) 271-274,1985.01. .
47.	H. Yayama, H. Kubo and A. Tomokiyo,Specific Heat of a Random Mixture of Two Antiferromagnets: CsMn1-xCoxCl3•2H2O,J. Phys. Soc. Jpn.,54 (1985) 4096-4098,1985.01. .
48.	H. Yayama, K. Kuroki, K. Hirakawa and A. Tomokiyo,Electrode Resistance of Metal Hydride in Alkaline Aqueous Solution,Jpn. J. Appl. Phys.,23 (1984) 1619-1623,1984.01. .
49.	H. Yayama, O. Ichinomiya and K. Hirakawa,Electrochemical Hydrogen-Storage in Ti-Mn Allow Electrode,Jpn. J. Appl. Phys.,22 (1983) L621-L623,1983.01. .
50.	H. Yayama and K. Hirakawa,Electrochemical Reaction of Cu Macroskeleton and its Effect in Metal-Hydride Electrode System,Jpn. J. Appl. Phys.,22 (1983) 1348,1983.01. .

Works, Software and Database

1.	Program for operation of dilution refrigerator.

Educational Activities

Post graduate course -- Low temperature physics

Under graduate course -- Thermodynamics, Electromagnetism II, Experimental physics

General Education -- Electromagnetizm, Practice of electromagnetizm, Thermodynamics, Mechanics, Practice of michanics, Experiment of elemental physics

http://frontier.phys.kyushu-u.ac.jp/LTP/yayama/index.html.