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古賀 貴亮 (こが たかあき) |
(北海道大学 大学院情報科学研究科 情報エレクトロニクス専攻) |
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1992年3月 |
東京大学 工学部 工業化学科 卒 |
1994年4月 |
ストックホルム王立工科大学 大学院修士課程 修了(材料物理)
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1995年6月 |
ハーバード大学 大学院工学及び応用科学専攻 工学修士(S.M.)
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2000年4月 |
同 博士課程修了(Ph.D.) 専門:応用物理学 |
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2000年5月 |
NTT(株)物性科学基礎研究所 リサーチ・アソシエイト
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2001年12月 |
科学技術振興事業団 さきがけ研究者 |
2004年4月 |
北海道大学 大学院情報科学研究科 助教授
現在に至る |
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1991年4月 |
卒業研究 (酸化物高温超伝導体の物性) |
1992年4月
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酸化物高温超伝導体の薄膜合成と物性
(ストックホルム王立工科大学大学院 研究助手) |
1995年6月
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超高硬度窒化炭素材料の薄膜及び高圧合成
(ハーバード大学大学院 研究助手) |
1997年1月
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半導体超格子、量子井戸の熱電物性
(マサチューセッツ工科大学大学院 研究助手) |
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[1] |
T. Koga, J. Nitta, T. Akazaki, H. Takayanagi,
"Rashba spin-orbit coupling probed by the weak
antilocalization analysis in InAlAs/InGaAs/InAlAs
quantum wells as a function of quantum well asymmetry",
submitted to Phys. Rev. Lett. (2002).
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[2] |
T. Koga, J. Nitta, H. Takayanagi, S. Datta, "Spin-filter
device based on the Rashba effect using a non-magnetic
resonant tunneling diode", Phys. Rev. Lett. (2002)
in press.
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[3] |
T. Koga, J. Nitta, S. Datta and H. Takayanagi,
in "Spintronics", Mat. Res. Soc. Symp. Proc. Vol.
690 (2002) to be published, "Proposal of a Novel
Spin Filter Realized in a Triple Barrier Resonant
Tunnel Diode using Rashba Spin-Orbit Interaction".
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[4] |
T. Koga, J. Nitta, T. Akazaki and H. Takayanagi,
in "Spintronics", Mat. Res. Soc. Symp. Proc. Vol.
690 (2002) to be published, "Anti-Weak-Localization
Study of Rashba Spin-Splitting Energy as a Function
of Well Asymmetry in InAlAs/InGaAs/InAlAs Quantum
Wells".
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[5] |
T. Koga, J. Nitta, T. Akazaki and H. Takayanagi,
Jpn. J. Appl. Phys. (2002) to be published, "Conditions
for the Spin Rectification Phenomena Predicted
for Semiconducting Triple Barrier Structures in
the Presence of Rashba Spin-Orbit Coupling".
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[6] |
T. Koga, J. Nitta, H. Takayanagi and S. Datta,
Program & Abstracts for The First International
Workshop on Quantum Nonplanar Nanostructures &
Nanoelectronics (QNN'01), p.191 (2001), "Proposal
for spin rectifying diode using Rashba spin-orbit
coupling in semiconducting triple barrier structures".
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[7] |
T. Koga, J. Nitta, T. Akazaki and H. Takayanagi,
Proceedings of the 10th International Conference
on Narrow Gap Semiconductors and Related Small
Energy Phenomena, Physics and Applications (NGS10),
IPAP Conf. Series 2, pp. 227 (2001), "Determination
of Rashba Spin-Splitting Energies in InGaAs/InAlAs
Heterostructures using Anti-Weak-Localization
Analysis".
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[8] |
T. Koga, J. Nitta, T. Akazaki and H. Takayanagi,
Physica E (2002) in press, "Rashba spin-splitting
energies probed by anti-weak-localization analysis
in symmetric and asymmetric InAlAs/InGaAs/InAlAs
quantum wells".
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[9] |
M.S. Dresselhaus, Y.M. Lin, T. Koga, S.B. Cronin,
O. Rabin, M.R. Black and G. Dresselhaus, Semiconductors
and Semimetals, Vol. 71 (2000), "Quantum Wells
and Quantum Wires for Potential Thermoelectric
Applications" [熱電特集号(本)の第一章].
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[10] |
古賀貴亮、M.S. Dresselhaus, 材料科学, 2000年11月号, "低次元・超格子系熱電材料の発展と今後の展望"
[解説記事].
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[11] |
T. Koga, S.B. Cronin and M.S. Dresselhaus, in
"Thermoelectric Materials 2000 - The Next Generation
Materials for Small-Scale Refrigeration and Power
Generation Applications", Mat. Res. Soc. Symp.
Proc. Vol. 626 (2000), "Carrier Pocket Engineering
for the Design of Low Dimensional Thermoelectrics
with High ZT" [招待講演].
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[12] |
T. Koga, O. Rabin and M.S. Dresselhaus, Phys.
Rev. B. 62, 16703 (2000), "Thermoelectric figure
of merit of Bi/Pb1-xEuxTe superlattices".
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[13] |
T. Koga, S.B. Cronin, M.S. Dresselhaus, J.L.
Liu and K.L. Wang, Appl. Phys. Lett. 77, 1490
(2000), "Experimental Proof-of-Principle Investigation
of Enhanced Z3DT in (001) oriented Si/Ge Superlattices".
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[14] |
T. Koga, X. Sun, S.B. Cronin, and M.S. Dresselhaus,
Proceedings for the 18th Int'l Conf. On Thermoelectrics,
Baltimore, USA, (1999), "Carrier Pocket Engineering
to Design Superior Thermoelctric Materials Using
Superlattice Structures" (Best Paper Award 受賞).
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[15] |
T. Koga, X. Sun, S.B. Cronin, and M.S. Dresselhaus,
Appl. Phys. Lett. 75, 2438 (1999), "Carrier Pocket
Engineering applied to `Strained' Si/Ge Superlattices
to design Useful Thermoelectric Materials".
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[16] |
T. Koga, T.C. Harman, S.B. Cronin, and M.S. Dresselhaus,
Phys. Rev. B. 60, 14286 (1999), "Mechanism of
the Enhanced Thermoelectric Power in (111) oriented
n-type PbTe/Pb1-xEuxTe Multiple-Quantum-Wells".
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[17] |
T. Koga, X. Sun, S.B. Cronin, and M.S. Dresselhaus,
Appl. Phys. Lett. 73, 2950 (1998), "Carrier Pocket
Engineering to Design Superior Thermoelctric Materials
Using GaAs/AlAs Superlattices".
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[18] |
T. Koga, X. Sun, S.B. Cronin, and M.S. Dresselhaus,
Mat. Res. Soc. Symp. Proc. Vol. 545, 375 (1999),
"Carrier Pocket Engineering to Design Superior
Thermoelctric Materials Using GaAs/AlAs Superlattices".
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[19] |
T. Koga, T.C. Harman, S.B. Cronin, X. Sun, and
M.S. Dresselhaus, Mat. Res. Soc. Symp. Proc. Vol.
545, 479 (1999), "Investigation of the Mechanism
of the Enhanced Thermoelectric Properties in the
PbTe based Superlattices".
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[20] |
T, Koga, T.C. Harman, S.B. Cronin, X. Sun, and
M.S. Dresselhaus, Mat. Res. Soc. Symp. Proc. Vol.
490, 263 (1998), "Modeling of the Enhanced Thermoelectric
Properties in PbTe/PbEuTe MQWs".
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[21] |
T. Koga, X. Sun, S.B. Cronin, M.S. Dresselhaus,
G. Chen, and K. Wang, Journal of Computer Aided
Materials Design 4, 175 (1997), "Modeling of the
Low-dimensional Thermoelectricity".
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[22] |
A.J. Stevens, T. Koga, C.B. Agee, M.J. Aziz,
and C.M.Lieber, Journal of American Chemical Society
118, 10900 (1996), "Stability of Carbon Nitride
Materials at High Pressure and Temperature".
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[23] |
T. Koga, B.M. Moon, I. Zakharchenko, H. Medelius
and K.V. Rao, IEEE TRANSACTIONS ON MAGNETICS,
Vol. 29, No. 6, November 1993, "Magnetism and
Structure of YBaCuO Superconducting Films Deposited
in Unusual Geometries Using Nd:YAG Laser".
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[24] |
T. Koga, I. Zakharchenko, B.M. Moon, and K.V.
Rao, Proc. of the 3rd IUMRS International Conference
on Advanced Materials (1993), "The Role of Oxygen
Pressure on the properties of YBaCuO Films Deposited
by 'Off-axis' Pulsed Laser Deposition".
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[25] |
T. Koga, J.H. Xu, B.M. Moon and K.V. Rao, NATO
ASI Series E: Applied Sciences - Vol. 234 'Multicomponent
and Multilayered Thin Films for Advanced Microtechnologies;
Techniques, fundamental and Devices'. (Kluwer
Academic Publishers, 1993) p.369, "YBaCuO films
by pulsed laser deposition and sputtering".
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[26] |
D. Pooke, K. Kishio, T. Koga, Y. Fukuda, N. Senada,
M. Nagoshi, K. Kitazawa and K. Yamafuji, Physica
C 198 (1992) p.349, "Charge transfer associated
with iodine intercalation in Bi2Sr2Can-1CunOy,
n=1-3".
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[27] |
D. Pooke, K. Kishio, N. Motohira, T. Tamura,
Y. Tomioka, T. Koga, K. Kitazawa, and K. yamafuji,
in: Advances in Superconductivity IV, eds. H.
Hayakawa and N. Koshizuka (Springer Verlag, Tokyo,
1992) p.233, "Structural and superconducting properties
of iodine intercalated Bi2Sr2Can-1CunOy (n=1,
2, 3)".
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【特許】
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1)
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M.S. Dresselhaus, T. C. Harman, S. B. Cronin,
T. Koga, X. Sun, and K. L. Wang, "Si/SiGe Superlattice
Structures for Use in Thermoelectric Devices,"
U.S. Patent No. 6,060,656.
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【受賞、奨学金等】
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1990年 |
(財)新日本奨学会奨学生 (平成3年まで)
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1992年 |
東京大学工学部国際交流協定による奨学生(KTH奨学金)
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1994年 |
(財)平和中島財団海外留学奨学生(平成8年まで)
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1999年 |
Harvard 大学 GSAS トラベル・グラント ($300)
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1999年 |
第18回国際熱電学会(ITS'99)最優秀論文賞
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※「1期生」 = 平成13年度採用研究者 2001年〜2004年
※「2期生」 = 平成14年度採用研究者 2002年〜2005年
※「3期生」 = 平成15年度採用研究者 2003年〜2006年
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