ホーム>研究成果

研究成果
  • 一期生
  • 二期生
  • 三期生
  • 一木 正聡
  • 木戸秋 悟
  • 木村 建次郎
  • 齊藤 健二
  • 白幡 直人
  • 高見澤 淳
  • 田中 秀明
  • 豊田 太郎
  • 内藤 昌信
  • 永野 修作
  • 平野 愛弓
  • 廣畑 貴文
  • 山西 陽子
  • 横山 英明
  • 和田 章
ナノ・スピンモーターの開発

廣畑 貴文 (ひろはた あつふみ)

受賞

2013年

2.Royal Society Industry Fellowship
2013/03
1.Best Poster Award at the MMM-Intermag Conference in Chicago, IL, U.S.A.
2013/01/18

論文発表

2013年

25.H. Kurebayashi, T. Skinner, D. Fang, C. Ciccarelli, A. J. Ferguson, K. Khazen, R. P. Campion, B. L. Gallagher, K. Olejnik, L. R. Fleet and A. Hirohata
Uniaxial anisotropy of two-magnon scattering in an ultrathin epitaxial Fe layer on GaAs
Applied Physics Letters
24.M. S. Rummey, Y. Zhang, J. Sagar, A. Vick, L. R. Fleet and A. Hirohata
Magnetic and transport properties of epitaxial Fe:MgO anti-granular films
IEEE Transactions on Magnetics
23.A. Hirohata, J. Sagar, L. Lari, L. R. Fleet and V. K. Lazarov
Heusler alloy films for spintronic devices (invited review)
Applied Physics A: Materials Science and Processing
22.L. R. Fleet, K. Yoshida, H. Kobayashi, Y. Kaneko, S. Matsuzaka, Y. Ohno, H. Ohno, S. Honda, J. Inoue and A. Hirohata
Correlating the interface structure to spin injection in abrupt Fe/GaAs(001) films
Physical Review B, vol. 87, 024401 (2013)

2012年

21.Y. J. Bae, N. J. Lee, T. H. Kim, H. Cho, C. Lee, L. R. Fleet and A. Hirohata
Growth and characterization of thin Cu-phthalocyanine films on MgO(100) layer for organic light-emitting diodes
Nanoscale Research Letters, vol. 7, 650 (2012)
20.S. Yamada, J. Sagar, S. Honda, L. Lari, G. Takemoto, H. Itoh, A. Hirohata, K. Mibu, M. Miyao and K. Hamaya
Room-temperature structural ordering of a Heusler-coumound Fe3Si
Physical Review B, vol. 86, 174406 (2012)
19.H. Endo, A. Hirohata, J. Sagar, L. R. Fleet, T. Nakayama and K. O'Grady
Effect of interface structure on exchange biased Heusler alloy films
IEEE Transactions on Magnetics, vol. 48, 2896 (2012)
18.J. Sagar, C. Yu, C. Pelter, J. Wood, A. Hirohata and K. O'Grady
Effect of seed layers on polycrystalline Co2FeSi thin films
IEEE Transactions on Magnetics, vol. 48, 4006 (2012)
17.M. S. Rummey, L. R. Fleet, H. Hing, X. Zhang and A. Hirohata
Magnetic properties of epitaxial co-evaporated Fe:MgO anti-granular films
IEEE Transactions on Magnetics, vol. 48, 4010 (2012)
16.J. Sagar, H. Sukegawa, L. Lari, V. K. Lazarov, S. Mitani, K. O'Grady and A. Hirohata
The effect of interfaces on magnetic activation volumes in single crystal Co2FeSi Heusler alloy thin films
Applied Physics Letters, vol. 101, 102410 (2012)
15.Y. Sakai, E. Tamura, S. Toyokawa, E. Shikoh, V. K. Lazarov, A. Hirohata, T. Shinjo, Y. Suzuki and M. Shiraishi
Observation of magnetic switching and multiferroic-like behavior of Co nanoparticles in a C60 matrix
Advanced Functional Materials, vol. 22, 3845 (2012)

2011年

14.M. S. Rummey, L. R. Fleet, H. Hing, X. Zhang and A. Hirohata
Magnetic properties of epitaxial co-evaporated Fe:MgO anti-granular films
IEEE Transactions on Magnetics
13.J. Sagar, C. Yu, C. Pelter, J. Wood, A. Hirohata and K. O'Grady
Effect of seed layers on polycrystalline Co2FeSi thin films
IEEE Transactions on Magnetics
12.H. Endo, A. Hirohata, J. Sagar, L. R. Fleet, T. Nakayama and K. O'Grady
Effect of interface structure on exchange biased Heusler alloy films
IEEE Transactions on Magnetics
11.Y. Sakai, E. Tamura, S. Toyokawa, E. Shikoh, V. K. Lazarov, A. Hirohata, T. Shinjo, Y. Suzuki and M. Shiraishi
Observation of magnetic switching and multiferroic-like behavior of Co nanoparticles in a C60 matrix
Advanced Functional Materials
10.L. R. Fleet, G. Cheglakov, K. Yoshida, V. K. Lazarov, T. Nakayama and A. Hirohata
Layer-by-layer crystallization of Co2FeSi Heusler alloy thin films
Journal of Physics D: Applied Physics, vol. 45, 032001(FTC) (2012)
9.A. Yamaguchi, A. Hirohata, T. Ono and H. Miyajima
Temperature estimation in a ferromagnetic Fe-Ni nanowire involing a current-driven domain wall motion
Journal of Physics: Condensed Matter, vol. 24, 024201 (2012)
8.A. Hirohata (Guest Editor)
Special cluster issue on "Spin-transfer-torque-induced phenomena"
Journal of Physics D: Applied Physics, vol. 44, 383001 (2011)
7.N. P. Aley, S. Takayama, A. Hirohata and K. O'Grady
Enhancement of exchange bias in the Co2FeSi/IrMn system
IEEE Transactions on Magnetics, vol. 47, 3490 (2011)
6.L. R. Fleet, H. Kobayashi, Y. Ohno and A. Hirohata
Atomic interfacial structures in Fe/GaAs films
IEEE Transactions on Magnetics, vol. 47, 2756 (2011)
5.J. Sagar, L. R. Fleet, A. Hirohata and K. O'Grady
Activation volumes in Heusler alloy thin films
IEEE Transactions on Magnetics, vol. 47, 2440 (2011)
4.H. Endo, A. Hirohata, J. Sagar, L. R. Fleet, T. Nakayama and K. O'Grady
Effect of grain size on exchange-biased Heusler alloys
Journal of Physics D: Applied Physics, vol. 44, 345003 (2011)
3.V. K. Lazarov, K. Yoshida, J. Sato, P. J. Hasnip, M. Oogane, A. Hirohata and Y. Ando
The effect of film and interface structure on the transport properties of Heusler based current-perpendicular-to-plane spin valves
Applied Physics Letters, vol. 98, 242508 (2011)
2.H. Endo, A. Hirohata, T. Nakayama and K. O'Grady
Optimization of exchange-biased Heusler alloys
Journal of Physics D: Applied Physics, vol. 44, 145003 (2011)
1.L. R. Fleet, H. Kobayashi, Y. Ohno, J.-Y. Kim, C. H. W. Barnes and A. Hirohata
Interfacial structure and transport properties of Fe/GaAs
Journal of Applied Physics, vol. 109, 07C504 (2011)

口頭発表

2013年

38.A. Hirohata, A. J. Vick, R. M. Abdullah, H. Hui, H. Liu and T. F. Alhuwaymel
Spin-current operation in a non-magnetic nano-ring
12th Joint MMM_Intermag Conference (2013) (Chicago, IL, USA)
37.J. Sagar, L. Lari, A. Hirohata and K. O'Grady
Optimisation of seed layers for polycrystalline Co2FeSi Heusler alloy thin films
12th Joint MMM_Intermag Conference (2013) (Chicago, IL, USA)

2012年

36.L. R. Fleet, K. Yoshida, H. Kobayashi, Y. Kaneko, S. Matsuzaka, Y. Ohno, H. Ohno, S. Honda, J. Inoue and A. Hirohata
Transport and structural properties of the Fe/GaAs(001)
Joint European Magnetics Symposia (JEMS 2012) (Parma, Italy)

2011年

35.J. Sagar, H. Sukegawa, L. Lari, V. K. Lazarov, S. Mitani and A. Hirohata
Characterisation of epitaxial and polycrystalline Co2FeSi thin films
19th International Conference on Magnetism (ICM) (Busan, Korea)
34.L. R. Fleet, M. J. Walsh, J. Sagar, T. Nakayama and A. Hirohata
Low temperature crystallization process in Co2FeSi Heusler alloy thin films
19th International Conference on Magnetism (ICM) (Busan, Korea)
33.A. Hirohata, J. Sagar, L. R. Fleet, M. J. Walsh, K. Yoshida, H. Sukegawa, S. Mitani, V. K. Lazarov, E. D. Boyes and T. Nakayama
The effect of an inhomogeneous interface on the transport properties across Fe/GaAs(001) films
19th International Conference on Magnetism (ICM) (Busan, Korea)
32.A. Hirohata
Nano-spintronics
Seagate European Magnetic Storage Conclave (ANSIN, Belfast, UK)
31.L. R. Fleet, M. J. Walsh, J. Sagar, T. Nakayama and A. Hirohata
Low- temperature in-situ crystallisation of Co2FeSi Heusler alloy thin films
International Magnetics Conference (Intermag) 2012 (Vancouver, BC, Canada)
30.L. R. Fleet, K. Yoshida, H. Kobayashi, Y. Kaneko, S. Matsuzaka, Y. Ohno, H. Ohno, S. Honda, J. Inoue and A. Hirohata
Spin injection across abrupt Fe/GaAs(001) interfaces
International Magnetics Conference (Intermag) 2012 (Vancouver, BC, Canada)
29.本多 周太、伊藤 博介、井上 順一郎、廣畑 貴文
Fe/GaAs接合におけるスピン注入の第一原理計算による解析
第67回日本物理学会年次大会 (関西学院大学)

2011年

28.J. Sagar, H. Sukegawa, A. Hirohata, S. Mitani and K. O'Grady
Structural and compositional characterisation of single crystal and polycrystalline Co2FeSi Heusler alloy thin films
Condensed Matter and Materials Physics (CMMP11) (Manchester, UK)
27.L. R. Fleet, K. Yoshida, H. Kobayashi, Y. Ohno and A. Hirohata
The interfacial structure and transport properties of Fe/GaAs(001) heterostructures
Condensed Matter and Materials Physics (CMMP11) (Manchester, UK)
26.A. Hirohata
Nano-spintronics
Korea-U.K. International Workshop on New Trends in Magnetism and Magnetic Materials (Jeju, Korea)
25.V. K. Lazarov, L. Lari, J. Sato, J. Sizeland, P. J. Hasnip, M. Oogane, A. Hirohata and Y. Ando
Atomic resolution structural study of the Heusler electrodes in Co2(Fe,Mn)Si/Ag/Co2(Fe,Mn)Si spin valves
56th Conference on Magnetism and Magnetic Materials (MMM) (Scottsdale, AZ, USA)
24.J. Sagar, H. Sukegawa, A. Hirohata, S. Mitani and K. O'Grady
Activation volumes in epitaxial Co2FeSi thin films
56th Conference on Magnetism and Magnetic Materials (MMM) (Scottsdale, AZ, USA)
23.N. Lee, Y. Bae, T. Kim, H. Cho, C. Lee, L. R. Fleet, A. Hirohata and E. Ito
Tailoring and understanding metal/organic semiconductor interfaces using a thin oxide layer
56th Conference on Magnetism and Magnetic Materials (MMM) (Scottsdale, AZ, USA)
22.L. R. Fleet, K. Yoshida, H. Kobayashi, Y. Ohno and A. Hirohata
Schottky barrier distributions in Fe/GaAs devices
56th Conference on Magnetism and Magnetic Materials (MMM) (Scottsdale, AZ, USA)
21.A. Hirohata, L. R. Fleet, M. J. Walsh, J. Sagar, G. Cheglakov, K. Yoshida, V. K. Lazarov, Y. Ohba, E. D. Boyes and T. Nakayama
Crystalline formation of polycrystalline Co-based full-Heusler alloy films observed by HRTEM with in-situ annealing (invited)
56th Conference on Magnetism and Magnetic Materials (MMM) (Scottsdale, AZ, USA)
20.J. Sagar, L. R. Fleet, A. Hirohata and K. O'Grady
Magnetic and structural characterisation of Co2FeSi ploycrystalline thin films
6th International School and Conference on Spintronics and Quantum Information Technology (Spintech6) (Matsue, Japan)
19.L. R. Fleet, K. Yoshida, H. Kobayashi, Y. Ohno and A. Hirohata
Atomic interfacial structures in Fe/GaAs
6th International School and Conference on Spintronics and Quantum Information Technology (Spintech6) (Matsue, Japan)
18.L. R. Fleet and A, Hirohata
Atomic interfacial structures in Fe/GaAs films
JSPS York-Tohoku Research Symposium on "Magnetic Materials and Spintronics" (York, UK)
17.A, Hirohata
Crystallisation and magnetic properties of polycrystalline Co-based full-Heusler alloy films
JSPS York-Tohoku Research Symposium on "Magnetic Materials and Spintronics" (York, UK)
16.L. R. Fleet, H. Kobayashi, Y. Ohno and A. Hirohata
Correlations between atomic interfacial structures and transport properties in Fe/GaAs
International Magnetics Conference (Intermag) 2011 (Taipei, Taiwan)
15.N. P. Aley, S. Takayama, A. Hirohata and K. O'Grady
Enhancement of exchange bias in the Co2FeSi/IrMn system
International Magnetics Conference (Intermag) 2011 (Taipei, Taiwan)
14.J. Sagar, L. R. Fleet, A. Hirohata and K. O'Grady
Activation volumes in Heusler alloy thin films
International Magnetics Conference (Intermag) 2011 (Taipei, Taiwan)
13.L. R. Fleet, G. Cheglakov, K. Yoshida, V. K. Lazarov, T. Nakayama and A. Hirohata
Crystallization and magnetic properties of Heusler alloy films
International Magnetics Conference (Intermag) 2011 (Taipei, Taiwan)
12.H. Endo, A. Hirohata, J. Sagar, L. R. Fleet, T. Nakayama and K. O'Grady
Effect of grain size on exchange-biased Heusler alloy films
International Magnetics Conference (Intermag) 2011 (Taipei, Taiwan)
11.廣畑 貴文
ナノ・スピンモーターの開発
第34回スピントロニクス研究会 (東京大学)

2010年

10.V. K. Lazarov, J. Sato, M. Oogane, K. Yoshida, A. Hirohata and Y. Ando
The effect of film and interface structure on transport properties of current-perpendicular-to-plane Heusler spin valves
55th Conference on Magnetism and Magnetic Materiasl (MMM) (Atlanta, GA, USA)
9.H. Kobayashi, S. Ikeda, L. R. Fleet, A. Hirohata, Y. Ohno and H. Ohno
Electrical detection of spin-polarized electrons in n-GaAs/MgO/CoFe junctions
55th Conference on Magnetism and Magnetic Materiasl (MMM) (Atlanta, GA, USA)
8.L. R. Fleet, A. Hirohata, K. O'Grady, H. Kobayashi and Y. Ohno
lectrical detection of spin transport in lateral Fe-GaAs devices
55th Conference on Magnetism and Magnetic Materiasl (MMM) (Atlanta, GA, USA)
7.A. Hirohata, I. Sugai, J.-G. Kang, M. Mizuguchi, K. Takanashi and S. N. Holmes
Measurement of a spin-polarised persistent current in a non-magnetic nanoring in a non-uniform field
55th Conference on Magnetism and Magnetic Materiasl (MMM) (Atlanta, GA, USA)
6.A. Hirohata
Generation and applications of a spin current in a nano-electronic devices
Current Research in Magnetism (Manchester, UK)
5.A. Hirohata and K. O'Grady
Techniques for spin polarisation for spintronic devices
UK-Japan Workshop on Advanced Materials (Cambridge, UK)
4.A. Hirohata, I. Sugai, M. Mizuguchi, K. Takanashi and S. N. Holmes
Experimental demonstration of a persistent current in a Au nanoring under the presence of a non-uniform magnetic field
4th International Workshop on Spin Currents and 2nd International Workshop on Spin Caloritronics (Sendai, Japan)
3.A. Yamaguchi, H. Miyajima, T. Sato, Y. Nakatani, A. Hirohata, T. Yamaoka, T. Uchiyama and Y. Utsumi
Self-homodyne detection of multi-votex motion induced by rf current in micron-sized Fe19Ni81 ellipse dots
11th Joint MMM_Intermag Conference (2010) (Washington, DC, USA)
2.A. Hirohata, I. Sugai, M. Mizuguchi, K. Takanashi and S. N. Holmes
Experimental demonstration of a persistent current
11th Joint MMM_Intermag Conference (2010) (Washington, DC, USA)
1.L. R. Fleet, K. Yoshida, A. Hirohata, H. Kurebayashi, J.-Y. Kim, C. H. W. Barnes, H. Kobayashi and Y. Ohno
Interface diffusion and Schottky barrier height in Fe/GaAs films
11th Joint MMM_Intermag Conference (2010) (Washington, DC, USA)

その他

2013年

10.R. Carpenter, A. Vick, G. Vallejo-Fernandez, A. Hirohata and K. O'Grady
Grain size effects in exchange bias elements
12th Joint MMM_Intermag Conference (2013) (Chicago, IL, USA)
9.L. R. Fleet, K. Yoshida, H. Kobayashi, Y. Kaneko, S. Matsuzaka, Y. Ohno, H. Ohno, S. Honda, J. Inoue and A. Hirohata
Transport and structural properties of the abrupt Fe/GaAs(001) interface
12th Joint MMM_Intermag Conference (2013) (Chicago, IL, USA)
8.M. S. Rummey, J. Sagar, A. Vick, L. R. Fleet, Y. Zhang and A. Hirohata
Structural and magnetic properties of epitaxial Fe:MgO anti-granular films
12th Joint MMM_Intermag Conference (2013) (Chicago, IL, USA)

2012年

7.Y. J. Bae, N. J. Lee, T. H. Kim, H. Cho, C. Lee, L. R. Fleet, A. Hirohata, Y.-A. Soh and G. Aeppli
Spin transport phenomena through MgO/CuPC hybrid barrier in magnetic tunnel junctions
International Magnetics Conference (Intermag) 2012 (Vancouver, BC, Canada)
6.M. S. Rummey, L. R. Fleet, H. Hing, X. Zhang and A. Hirohata
Magnetic properties of epitaxial co-evaporated Fe:MgO anti-granular films
International Magnetics Conference (Intermag) 2012 (Vancouver, BC, Canada)
5.J. Sagar, C. Yu, C. Pelter, J. Wood, A. Hirohata and K. O'Grady
The effect of seed layer in polycrystalline Co2FeSi thin films
International Magnetics Conference (Intermag) 2012 (Vancouver, BC, Canada)
4.H. Endo, A. Hirohata, T. Nakayama and K. O'Grady
Effect of interface structure on exchange biased Heusler alloy films
International Magnetics Conference (Intermag) 2012 (Vancouver, BC, Canada)

2010年

3.Y. Bae, N. Lee, T. Kim, J. Lee, H. Cho, C. Lee, L. Fleet and A. Hirohata
Spin-dependent transport properties in Fe/MgO(100)/CuPC/Py hetero tunnel junctions
55th Conference on Magnetism and Magnetic Materiasl (MMM) (Atlanta, GA, USA)
2.H. Endo, A. Hirohata, T. Nakayama, B. Kaeswurm and K. O'Grady
Exchange biased Heusler alloy for spin injection
55th Conference on Magnetism and Magnetic Materiasl (MMM) (Atlanta, GA, USA)
1.N. Lee, Y. Bae, J. Lee, H. Cho, C. Lee, A. Hirohata, L. Fleet and T. Kim
Magneto-optoelectronic properties of Fe/MgO/CuPC heterostructures
55th Conference on Magnetism and Magnetic Materiasl (MMM) (Atlanta, GA, USA)

このページの先頭へ