研究発表

学術論文

2017

  1. 「Voltage-induced magnetization dynamics in CoFeB/MgO/CoFeB magnetic tunnel junctions」K. Miura, S. Yabuuchi, M. Yamada, M. Ichimura, B. Rana, S. Ogawa, H. Takahashi, Y. Fukuma, Y. Otani, Scientific Reports, Vol. 7, 42511 (2017).
  2. 「Important role of magnetization precession angle measurment in inverse spin Hall effect induced by spin pumping」S. Gupta, R. Medwal, D. Kodama, K. Kondou, Y. Otani, Y. Fukuma, Applied Physics Letters, Vol. 110, 022404 (2017).
  3. 「Effect of excitation power on voltage induced local magnetization dynamics in an ultrathin CoFeB film」B. Rana, Y. Fukuma, K. Miura, H. Takahashi, Y. Otani, Scientific Reports, Vol. 7, 2318 (2017).
  4. 「Excitation of coherent propagating spin waves in ultrathin CoFeB film by voltage-controlled magnetic anisotropy」B. Rana, Y. Fukuma, K. Miura, H. Takahashi, Y. Otani, Applied Physics Letters, Vol. 111, 052404 (2017).

2016

  1. 「Fermi-level-dependent charge-to-spin current conversion by Dirac surface states of topological insulators」K. Kondou, R. Yoshimi, A. Tsukazaki, Y. Fukuma, J. Matsuno, K. S. Takahashi, M. Kawasaki, Y. Tokura, Y. Otani, Nature Physics, Vol. 12, 1027 (2016).
  2. 「Epitaxial growth of diluted magnetic semiconductor GeCrTe with high Cr composition」Y. Fukuma, H. Asada, S. Senba, T. Koyanagi, Applied Physics Letters, Vol. 108, 222403 (2016).

2015

  1. 「Spin relaxation characteristics in Ag nanowire covered with various oxides」S. Karube, H. Idzuchi, K. Kondou, Y. Fukuma, Y. Otani, Applied Physics Letters, Vol. 107, 122406 (2015).
  2. 「Spin transport in non-magnetic nano-structure induced by non-local spin injection」H. Idzuchi, Y. Fukuma, Y. Otani, Physica E, Vol. 68, 239 (2015).

2014

  1. 「Critical exponents and domain structures of magnetic semiconductor EuS and Gd-doped EuS films near Curie temperature」H. Idzuchi, Y. Fukuma, H. S. Park, T. Matsuda, T. Tanigaki, S. Aizawa, M. Shirai, D. Shindo, Y. Otani, Applied Physics Express, Vol. 7, 113002 (2014).
  2. 「Effect of anisotropic spin absorption on the Hanle effect in lateral spin valves」H. Idzuchi, Y. Fukuma, S. Takahashi, S. Maekawa, Y. Otani, Physical Review B (Rapid Communication), Vol. 89, 81308 (2014).
  3. 「Detection of a symmetric circular gyration of the vortex core via the second-order harmonic magnetoresistance oscillation」S. Sugimoto, N. Hasegawa, Y. Niimi, Y. Fukuma, S. Kasai, Y. Otani, Applied Physics Express, Vol. 7, 023006 (2014).

2013

  1. 「5d iridium oxide as a material for spin-current detection」K. Fujiwara, Y. Fukuma, J. Matsuno, H. Idzuchi, Y. Niimi, Y. Otani, H. Takagi, Nature Communications, Vol. 4, 2893 (2013).
  2. 「Tunable Magnonic Spectra in Two-Dimensional Magnonic Crystals with Variable Lattice Symmetry」S. Saha, R. Mandal, S. Barman, D. Kumar, B. Rana, Y. Fukuma, S. Sugimoto, Y. Otani, A. Barman, Advanced Functional Materials, Vol. 23, 2378 (2013).
  3. 「Configurational anisotropic spin waves in cross-shaped Ni80Fe20 nanoelements」B. K. Mahato, B. Rana, R. Mandal, D. Kumar, S. Barman, Y. Fukuma, Y. Otani, A. Barman, Applied Physics Letters, Vol. 102, 192402 (2013).
  4. 「Impact of interface properties on spin accumulation in dual-injection lateral spin valves」H. Idzuchi, S. Karube, Y. Fukuma, T. Aoki, Y. Otani, Applied Physics Letters, Vol. 103, 162403 (2013).
  5. 「Spin injection properties in trilayer graphene lateral spin valves」Y. P. Liu, H. Idzuchi, Y. Fukuma, O. Rousseau, Y. Otani, W. S. Lew, Applied Physics Letters, Vol. 102, 033105 (2013).

2012

  1. 「Towards coherent spin precession in pure-spin current」H. Idzuchi, Y. Fukuma, Y. Otani, Scientific Reports, Vol. 2, 628 (2012).
  2. 「Spin relaxation mechanism in silver nanowires covered with MgO protection layer」H. Idzuchi, Y. Fukuma, L. Wang, Y. Otani, Applied Physics Letters, Vol. 101, 022415 (2012).
  3. 「Optically Induced Tunable Magnetization Dynamics in Nanoscale Co Antidot LatticesR. Mandal, S. Saha, D. Kumar, S. Barman, S. Pal, K. Das, A. Raychaudhuri, Y. Fukuma, Y. Otani, A. Barman, ACS NANO, Vol. 6, 3397 (2012).
  4. 「Temperature evolution of spin-polarized electron tunneling in Silicon nanowire-Permalloy lateral spin valve system」J. Tarun, S. Huang, Y. Fukuma, H. Idzuchi, Y. Otani, N. Fukata, K. Ishibashi, S. Oda, Applied Physics Express, Vol. 5, 045001 (2012).
  5. 「Anisotropy in collective precessional dynamics in arrays of Ni80Fe20 nanoelements」B. Rana, D. Kumar, S. Barman, S. Pal, R. Mandal, Y. Fukuma, Y. Otani, S. Sugimoto, A. Barman, Journal of Applied Physics, Vol. 111, 07D503 (2012).


ー 2011 (selected papers)


プレス発表


解説

  • 「スピントロニクス技術を用いた高感度磁気センサー開発の動向」福間康裕, 大谷義近, 研究開発リーダー 2013年4月号, pp.1349-1393.
  • 「非磁性体金属細線中のスピン緩和」福間康裕, 井土宏, 大谷義近, 日本磁気学会 第183回研究会資料, 2012年, pp. 25-29.
  • 「NiFe/MgO/Ag接合を用いた高効率純スピン流生成技術の開発ースピン蓄積素子への応用ー」福間康裕, 工業材料, 2012年, pp. 36-37.

特許

  • 特許第5598975号「スピン注入源およびその製造方法」福間康裕, 大谷義近.
  • 特許第5590488号「電流ースピン流変換素子」藤原宏平, 福間康裕, 松野丈夫, 大谷義近, 高木英典.
  • 特許第4915765号「強磁性半導体交換結合膜」福間康裕, 小柳剛, 浅田裕法.
  • 特許第4930933号「磁気光学素子」福間康裕, 小柳剛, 浅田裕法.

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