Last updated: 02/01/2023

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Patents

Books

News & Press

 

Spin-photonics Spin photonics

Spin-currents Spin-polarised currents

Magnetoresistance Magnetoresistance

Half-metals Half-metals

Domain structures Domain structures

Miscellaneous Miscellaneous

 

Publications Before 2007

  1. Magnetoresistance T. Yang, A. Hirohata, L. Vila, T. Kimura and Y. Otani,
    "Vertical stack of Co nanorings with current-perpendicular-to-plane giant magnetoresistance: Experiment and micromagnetic simulation,"
    Physical Review B 76, 172401 (2007).
  2. Magnetoresistance T. Yang, A. Hirohata, T. Kimura and Y. Otani,
    "Domain formation induced by perpendicular spin injection,"
    Journal of Magnetism and Magnetic Materials 310, e690-e692 (2007).
  3. Magnetoresistance T. Yang, A. Hirohata, M. Hara, T. Kimura and Y. Otani,
    "Current-induced vortex-vortex switching in a nanopillar comprising two Co nano-rings,"
    Applied Physics Letters 90, 092505 (2007).
  4. Magnetoresistance T. Yang, M. Hara, A. Hirohata, T. Kimura and Y. Otani,
    "Magnetic characterization and switching of Co nano-rings in current-perpendicular-to- plane configuration,"
    Applied Physics Letters 90, 022504 (2007) arXiv.
  5. Half-metals A. Hirohata, M. Kikuchi, N. Tezuka, K. Inomata, J. S. Claydon, Y. B. Xu and G. van der Laan,
    "Heusler alloy/semiconductor hybrid structures (invited review),"
    Current Opinion in Solid State and Materials Science 10, 93-107 (2006).
  6. Magnetoresistance T. Yang, A. Hirohata, M. Hara, T. Kimura and Y. Otani,
    "Temperature dependence of intrinsic switching current of a Co nanomagnet,"
    Applied Physics Letters 89, 252505 (2006).
  7. Magnetoresistance T. Yang, A. Hirohata, T. Kimura and Y. Otani,
    "Manipulating spin current in the magnetic nanopillar,"
    Journal of Nanoscience and Nanotechnology 7, 259 (2006).
  8. Magnetoresistance T. Yang, A. Hirohata, T. Kimura and Y. Otani,
    "Estimation of local and nonlocal contributions to the current-induced magnetization switching,"
    Physical Review B 74, 153301 (2006).
  9. Magnetoresistance T. Yang, A. Hirohata, T. Kimura and Y. Otani,
    "Spin-transfer-induced magnetic domain formation,"
    Journal of Applied Physics 100, 073906 (2006).
  10. Miscellaneous A. Hirohata, J. S. Moodera and G. Berera,
    "Structural and electrical properties of InSe polycrystalline films and diode fabrication,"
    Thin Solid Films 510, 247-250 (2006).
  11. Magnetoresistance T. Yang, A. Hirohata, T. Kimura and Y. Otani,
    "Influence of capping layer on the current-induced magnetization switching in magnetic nanopillars,"
    Journal of Applied Physics 99, 073708 (2006).
  12. Half-metals A. Hirohata, H. Kurebayashi, S. Okamura, N. Tezuka and K. Inomata,
    "Magnetic properties of epitaxial Co2Cr1-xFexAl full Heusler alloy thin films with the L21 structure,"
    IEEE Transactions on Magnetics 41, 2802-2804 (2005).
  13. Magnetoresistance H. Sukegawa, A. Hirohata, S. Nakamura, N. Tezuka and K. Inomata,
    "Magnetic transport mechanism in double ferromagnetic tunnel junctions with two- dimensional ferromagnetic particles,"
    IEEE Transactions on Magnetics 41, 2679-2681 (2005).
  14. Magnetoresistance T. Ochiai, Y. Jiang, A. Hirohata, N. Tezuka, S. Sugimoto and K. Inomata,
    "Influence of spin wave excitation on current-induced magnetization switching in a nanopillar with a synthetic antiferromagnetic layer,"
    Applied Physics Letters 86, 242506 (2005).
  15. Half-metals A. Hirohata, H. Kurebayashi, S. Okamura, T. Masaki, T. Nozaki, M. Kikuchi, N. Tezuka, K. Inomata, J. S. Claydon and Y. B. Xu,
    "Magnetic properties of epitaxial L21-structured Co2(Cr,Fe)Al thin films on GaAs(001) substrates,"
    Journal of Applied Physics 97, 10C308 (2005).
  16. Half-metals A. Hirohata, H. Kurebayashi, S. Okamura, M. Kikuchi, T. Masaki, T. Nozaki, N. Tezuka and K. Inomata,
    "Structural and magnetic properties of epitaxial L21-structured Co2(Cr,Fe)Al films grown on GaAs(001) substrates,"
    Journal of Applied Physics 97, 103714 (2005).
  17. Magnetoresistance H. Sukegawa, S. Nakamura, A. Hirohata, N. Tezuka, K. Inomata and S. Sugimoto,
    "Tunnel magnetoresistance enhancement in a double tunnel junction with single discontinuous ferromagnetic layer insertion,"
    Journal of the Magnetics Society of Japan 29, 274-277 (2005) (in Japanese).
  18. Magnetoresistance H. Sukegawa, S. Nakamura, A. Hirohata, N. Tezuka and K. Inomata,
    "Significant magnetoresistance enhancement due to a co-tunneling process in a double tunnel junction with single discontinuous ferromagnetic layer insertion,"
    Physical Review Letters 94, 068304 (2005).
  19. Magnetoresistance T. Nozaki, A. Hirohata, N. Tezuka, S. Sugimoto and K. Inomata,
    "Bias voltage effect on tunnel magnetoresistance in fully epitaxial MgO double barrier magnetic tunnel junctions,"
    Applied Physics Letters 86, 082501 (2005).
  20. Half-metals A. Hirohata, H. Kurebayashi, S. Okamura, M. Kikuchi, T. Masaki, T. Nozaki, N. Tezuka and K. Inomata,
    "Structural and magnetic properties of Co2Cr1-xFexAl thin films with the L21 structure,"
    Journal of the Magnetics Society of Japan 29, 124-127 (2005) (in Japanese).
  21. Magnetoresistance T. Nozaki, Y. Jiang, Y. Kaneko, A. Hirohata, N. Tezuka, S. Sugimoto and K. Inomata,
    "Spin-dependent quantum oscillations in magnetic tunnel junctions with Ru quantum wells,"
    Physical Review B 70, 172401 (2004).
  22. Magnetoresistance Y. Jiang, T. Nozaki, S. Abe, T. Ochiai, A. Hirohata, N. Tezuka and K. Inomata,
    "Substantial reduction of critical current for magnetization switching in an exchange-biased spin-valve,"
    Nature Materials 3, 361-364 (2004).
  23. Half-metals K. Inomata, N. Tezuka, S. Okamura, H. Kurebayashi and A. Hirohata,
    "Magnetoresistance in tunnel junctions using Co2(Cr,Fe)Al full-Heusler alloys,"
    Journal of Applied Physics 95, 7234-7236 (2004).
  24. Magnetoresistance Y. Jiang, S. Abe, T. Ochiai, T. Nozaki, A. Hirohata, N. Tezuka and K. Inomata,
    "Effective reduction of critical current for current-induced magnetization switching by a Ru layer insertion in an exchange-biased spin-valve,"
    Physical Review Letters 92, 167204 (2004) arXiv.
  25. Spin-photonics S. J. Steinmuller, T. Trypiniotis, W. S. Cho, A. Hirohata, W. S. Lew, C. A. F. Vaz and J. A. C. Bland,
    "Highly efficient spin filtering of ballistic electrons,"
    Physical Review B 69, 153309 (2004).
  26. Magnetoresistance T. Nozaki, Y. Jiang, H. Sukegawa, N. Tezuka, A. Hirohata, K. Inomata and S. Sugimoto,
    "Magnetic switching properties of magnetic tunnel junctions using a synthetic ferrimagnet free layer,"
    Journal of Applied Physics 95, 3745-3748 (2004).
  27. Spin-photonics J. A. C Bland, S. J. Steinmuller, A. Hirohata, W. S. Cho, Y. B. Xu, C. M. Guertler, G. Wastlbauer, A. Ionescu and T. Taniyama and T. Trypiniotis,
    "Optical studies of spin injection and detection at ferromagnet/semiconductor interfaces,"
    Europhysics News 6, 240 (2003).
  28. Spin-photonics J. A. C. Bland, S. J. Steinmueller, A. Hirohata, W. S. Cho, Y. B. Xu, C. M. Guertler, G. Wastlbauer, A. Ionescu, T. Trypiniotis and S. N. Holmes,
    "Electron spin filtering in ferromagnet/semiconductor heterostructures,"
    Journal of Physics D: Applied Physics 36, 2204-2210 (2003).
  29. Spin-photonics A. Hirohata, S. J. Steinmueller, W. S. Cho, Y. B. Xu, C. M. Guertler, J. A. C. Bland and S. N. Holmes,
    "Ballistic spin transport across ferromagnet/semiconductor interfaces at room temperature,"
    Physical Review B 66, 035330 (2002).
  30. Spin-photonics A. Hirohata, C. M. Guertler, W. S. Lew, Y. B. Xu, J. A. C. Bland and S. N. Holmes,
    "Test of ballistic spin-polarized electron transport across ferromagnet/semiconductor Schottky interfaces,"
    Journal of Applied Physics 91, 7481-7483 (2002).
  31. Domain structures A. Hirohata, Y. B. Xu, J. A. C. Bland, S. N. Holmes, E. Cambril, Y. Chen and F. Rousseaux,
    "Influence of crystalline structures on the domain configurations in controlled mesoscopic ferromagnetic wire junctions,"
    Journal of Applied Physics 91, 7308-7310 (2002).
  32. Domain structures I. Ruiz-Feal, L. Lopez-Diaz, A. Hirohata, J. Rothman, C. M. Guertler, J. A. C. Bland, L. M. Garcia, J. M. Torres, J. Bartolome, F. Bartolome, M. Natali, D. Decanini D and Y. Chen,
    "Geometric coercivity scaling in magnetic thin film antidot arrays,"
    Journal of Magnetism and Magnetic Materials 242-245, 597-600 (2002).
  33. Domain structures Y. B. Xu, A. Hirohata, S. M. Gardiner, J. Rothman, M. Kl_ui, L. Lopez-Diaz, M. Tselepi, J. A. C. Bland, Y. Chen, E. Cambril and F. Rousseaux,
    "Effects of interdot dipole coupling in mesoscopic epitaxial Fe(100) dot arrays,"
    IEEE Transactions on Magnetics 37, 2055-2057 (2001).
  34. Domain structures A. Hirohata, Y. B. Xu, C. C. Yao, H. T. Leung, W. Y. Lee, S. M. Gardiner, D. G. Hasko and J. A. C. Bland,
    "Domain wall trapping in controlled mesoscopic ferromagnetic wire junctions,"
    Journal of Magnetism and Magnetic Materials 226-230, 1845-1847 (2001).
  35. Spin-photonics A. Hirohata, Y. B. Xu, C. M. Guertler and J. A. C. Bland,
    "Spin-polarized electron transport in ferromagnet/semiconductor Schottky barrier structures,"
    Journal of Magnetism and Magnetic Materials 226-230, 914-916 (2001).
  36. Spin-photonics J. A. C. Bland, A. Hirohata, C. M. Guertler, Y. B. Xu and M. Tselepi,
    "Spin-polarized electron transport in ferromagnet/semiconductor hybrid structures (invited),"
    Journal of Applied Physics 89, 6740-6744 (2001).
  37. Spin-photonics A. Hirohata, Y. B. Xu, C. M. Guertler, J. A. C. Bland and S. N. Holmes,
    "Spin-dependent electron transport in ferromagnet/semiconductor Schottky barrier structures,"
    MRS 2000 Spring Meeting Symposia Proceedings 614, F5.4 (2001).
  38. Domain structures A. Hirohata, C. C. Yao, H. T. Leung, Y. B. Xu, C. M. Guertler and J. A. C. Bland,
    "Magnetic domain studies of permalloy wire-based structures with junctions,"
    IEEE Transactions on Magnetics 36, 3068-3070 (2000).
  39. Domain structures W. Y. Lee, A. Hirohata, H. T. Leung, Y. B. Xu, S. M. Gardiner, C. C. Yao and J. A. C. Bland,
    "Magnetization reversal in mesoscopic Ni80Fe20 wires: A magnetic domain launching device,"
    IEEE Transactions on Magnetics 36, 3018-3020 (2000).
  40. Spin-photonics J. A. C. Bland, A. Hirohata, Y. B. Xu, C. M. Guertler and S. N. Holmes,
    "Spin-polarized electron transport processes at ferromagnet/semiconductor interfaces (invited),"
    IEEE Transactions on Magnetics 36, 2827-2832 (2000).
  41. Spin-photonics A. Hirohata, Y. B. Xu, C. M. Guertler, J. A. C. Bland and S. N. Holmes,
    "Spin polarized electron transport in ferromagnet/semiconductor hybrid structures induced by photon excitation,"
    Physical Review B 63, 104425 (2001).
  42. Magnetoresistance Y. B. Xu, C. A. F. Vaz, A. Hirohata, H. T. Leung, C. C. Yao, J. A. C. Bland, E. Cambril, F. Rousseaux and H. Launois,
    "Magneto-resistance of a domain wall at a submicron junction,"
    Physical Review B 61, R14901-R14904 (2000).
  43. Domain structures Y. B. Xu, A. Hirohata, L. Lopez-Diaz, H. T. Leung, M. Tselepi, S. M. Gardiner, W. Y. Lee, J. A. C. Bland and F. Rousseaux, E. Cambril and H. Launois,
    "Micromagnetism in mesoscopic epitaxial Fe dots,"
    Journal of Applied Physics 87, 7019-7021 (2000).
  44. Domain structures A. Hirohata, Y. B. Xu, C. C. Yao, H. T. Leung, W. Y. Lee, S. M. Gardiner, D. G. Hasko, J. A. C. Bland and S. N. Holmes,
    "Domain wall trapping in controlled submicron ferromagnetic elements,"
    Journal of Applied Physics 87, 4727-4729 (2000).
  45. Spin-photonics A. Hirohata, Y. B. Xu, C. M. Guertler and J. A. C. Bland,
    "Spin-dependent electron transport in NiFe/GaAs Schottky barrier structures,"
    Journal of Applied Physics 87, 4670-4672 (2000).
  46. Domain structures W. Y. Lee, C. C. Yao, A. Hirohata, Y. B. Xu, H. T. Leung, S. M. Gardiner, S. McPhail, B. C. Choi, D. G. Hasko and J. A. C. Bland,
    "Domain nucleation processes in mesoscopic Ni80Fe20 wire junctions,"
    Journal of Applied Physics 87, 3032-3036 (2000).
  47. Domain structures S. P. Li, W. S. Lew, Y. B. Xu, A. Hirohata, A. Samad, F. Baker and J. A. C. Bland,
    "Magnetic nanoscale dots on colloid crystal surfaces,"
    Applied Physics Letters 76, 748-756 (2000).
  48. Domain structures A. Hirohata, H. T. Leung, Y. B. Xu, C. C. Yao, W. Y. Lee and J. A. C. Bland,
    "Magnetic domain evolution in permalloy mesoscopic dots,"
    IEEE Transactions on Magnetics 35, 3886-3888 (1999).
  49. Domain structures W. Y. Lee, Y. B. Xu, C. A. F. Vaz, A. Hirohata, H. T. Leung, C. C. Yao, B. C. Choi, J. A. C. Bland, F. Rousseaux, E. Cambril and H. Launois,
    "Effect of junction geometry on switching field and reversal behavior in permalloy wires,"
    IEEE Transactions on Magnetics 35, 3883-3885 (1999).
  50. Magnetoresistance C. C. Yao, D. G. Hasko, W. Y. Lee, A. Hirohata, Y. B. Xu and J. A. C. Bland,
    "Pseudo-Hall effect and anisotropic magnetoresistance in a mesoscopic Ni80Fe20 device,"
    IEEE Transactions on Magnetics 35, 3616-3618 (1999).
  51. Domain structures W. Y. Lee, H. T. Leung, W. Zhang, Y. B. Xu, A. Hirohata, C. C. Yao, B. C. Choi, D. G. Hasko and J. A. C. Bland,
    "Magnetization reversal and magnetic anisotropy in Co network nanostructures,"
    IEEE Transactions on Magnetics 35, 3475-3477 (1999).
  52. Spin-photonics A. Hirohata, Y. B. Xu, C. M. Guertler and J. A. C. Bland,
    "Spin dependent electron transport through the ferromagnet/semiconductor interface induced by photon excitation,"
    IEEE Transactions on Magnetics 35, 2910-2912 (1999).
  53. Magnetoresistance C. C. Yao, D. G. Hasko, W. Y. Lee, A. Hirohata, Y. B. Xu and J. A. C. Bland,
    "Influence of lateral geometry on magnetoresistance and magnetisation reversal in Ni80Fe20 wires,"
    IEEE Transactions on Magnetics 35, 2865-2867 (1999).
  54. Domain structures G. Lauhoff, A. Hirohata, J. A. C. Bland, J. Lee, S. Langridge and J. Penfold,
    "Magnetic Anisotropy, Magnetic moments and coupling of Cu/Co/Cu/Ni/Cu(001) trilayer,"
    Journal of Physics: Condensed Matter 11, 6707-6713 (1999).
  55. Magnetoresistance Y. B. Xu, C. A. F. Vaz, A. Hirohata, C. C. Yao, W. Y. Lee, J. A. C. Bland, F. Rousseaux, E. Cambril and H. Launois,
    "Domain wall trapping probed by magnetoresistance and magnetic force microscopy in submicron ferromagnetic wire structures,"
    Journal of Applied Physics 85, 6178-6180 (1999).
  56. Spin-photonics A. Hirohata, Y. B. Xu, C. M. Guertler and J. A. C. Bland,
    "Spin-dependent electron transport at the ferromagnet/semiconductor interface,"
    Journal of Applied Physics 85, 5804-5806 (1999).
  57. Domain structures W. Zhang, C. A. F. Vaz, A. Hirohata and J. A. C. Bland,
    "Easy axis transition in epitaxial fcc NiFe/Ni/Cu(100),"
    Journal of Applied Physics 85, 4806-4808 (1999).
  58. Domain structures G. Lauhoff, J. Lee, W. Y. Lee, A. Hirohata, A. Samad, J. A. C. Bland, S. Langridge and J. Penfold,
    "Perpendicular magnetic anisotropy of exchange coupled Co/Cu/Ni/Cu/Si(001) structures,"
    Journal of the Magnetics Society of Japan 23, 572-574 (1999).
  59. Domain structures A. Hirohata, T. Ono and H. Miyajima,
    "Magnetic properties of a martensite in Fe-Ni alloy measured by means of scanning probe microscopy,"
    Journal of Magnetism and Magnetic Materials 177-181, 1243-1244 (1998).
  60. Domain structures A. Hirohata and H. Miyajima, "Observation of the magnetic domain structure in martensites by means of MFM and AFM,"
    Journal of the Magnetics Society of Japan 21, 401-404 (1997) (in Japanese).
  61. Domain structures A. Hirohata and H. Miyajima,
    "Micromagnetic configurations of martensite in Fe-Ni alloys,"
    Journal of Applied Physics 81, 5665-5667 (1997).
  62. Domain structures A. Hirohata, S. Yuasa, Y. Otani and H. Miyajima,
    "Observation of the magnetic domain structure of martensites by means of MFM,"
    Journal of the Magnetics Society of Japan 20, 273-276 (1996) (in Japanese).
 

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