Dept. of Physics, Keio Univ., Nano Magnonics Research

Publications

∼ 2017 ∼

  • K. Sekiguchi, S-W. Lee, H. Sukegawa, N. Sato, S.-H. Oh, R. D. McMichael, and K. J. Lee,
    Spin-wave propagation in cubic anisotropic materials,
    NPG Asia Materials 9, e392 (2017).
    doi:10.1038/am.2017.87 [OPEN ACCESS]
  • N. Kanazawa, T. Goto, K. Sekiguchi, A. B. Granovsky, C. A. Ross, H. Takagi, Y. Nakamura, H. Uchida and M. Inoue,
    The role of Snell's law for a magnonic majority gate,
    Scientific Reports 7, 7898 (2017).
    doi:10.1038/s41598-017-08114-7 [OPEN ACCESS]
  • N. Sato, S.-W. Lee, K.-J. Lee and K. Sekiguchi,
    Current-induced modulation of backward spin-waves in metallic microstructures,
    Journal of Physics D: Applied Physics 50, 094004 (2017).
    doi.org/10.1088/1361-6463/aa59d2

    ∼ 2016 ∼

  • N. Sato, S.-J. Lee, S.-W. Lee, K.- J. Lee, and K. Sekiguchi,
    Phase stability of magnonic logic operation in microfabricated metallic wires,
    Applied Physics Express 9, 083001 (2016).
    doi.org/10.7567/APEX.9.083001
  • N. Kanazawa, T. Goto, K. Sekiguchi, A. B. Granovsky, H. Takagi, Y. Nakamura, and M. Inoue,
    Spin wave absorber generated by artificial surface anisotropy for spin wave device network
    AIP Advance 6, 095204 (2016).
    doi.org/10.1063/1.4962664 [OPEN ACCESS]
  • N. Kanazawa, T. Goto, K. Sekiguchi, A. B. Granovsky, C. A. Ross, H. Takagi, Y. Nakamura, and M. Inoue,
    Demonstration of a robust magnonic spin wave interferometer,
    Scientific Reports 6, 30268 (2016).
    doi:10.1038/srep30268 [OPEN ACCESS]

    ∼ 2015 ∼

  • M. Goto, et.al., and K. Sekiguchi,
    Criteria for electric determination of anti-vortex creation in ferromagnetic thin film,
    Japanese Journal of Applied Physics 54, 023001 (2015).
    doi.org/10.7567/JJAP.54.023001
  • T. Goto, N. Kanazawa, A. Buyandalai, H. Takagi, Y. Nakamura, S. Okajima, T. Hasegawa, A. B. Granovsky, K. Sekiguchi, C. A. Ross, and M. Inoue,
    Spin wave differential circuit for realization of thermally stable magnonic sensors,
    Applied Physics Letters 106, 132412 (2015).
    doi.org/10.1063/1.4916989

    ∼ 2014 ∼

  • N. Sato, N. Ishida, T. Kawakami, and K.Sekiguchi,
    Propagating spectroscopy of backward volume spin wave in a metallic FeNi film,
    Applied Physics Letters 104, 032411 (2014).
    doi.org/10.1063/1.4863215
  • N. Sato, and K. Sekiguchi,
    Electrical Demonstration of Spin-Wave Logic Operation,
    Applied Physics Express 6, 063001 (2014).
    doi.org/10.7567/APEX.6.063001[SPOTLIGHT PAPERS]

    ∼ 2013 ∼

  • N. Sato, and K. Sekiguchi,
    Excitation of Continuous Magnetostatic Surface Spin Wave in Ferromagnetic Thin Films,
    Journal of Magnetics Society of Japan 37, 214 (2013).
    doi.org/10.3379/msjmag.1305R006[OPEN ACCESS]
  • K. Nakano, K. Tanabe, R.Hiramatsu, D.Chiba, N. Ohshima, S. Kasai, T. Sato, Y. Nakatani, K. Sekiguchi, K. Kobayashi, and T. Ono
    Real-time observation of electrical vortex core switching,
    Applied Physics Letters 102, 072405 (2013).
    doi.org/10.1063/1.4793212

    ∼ 2012 ∼

  • K. Sekiguchi, T. N. Vader, K. Yamada, S. Fukami, N. Ishiwata, S.-M. Seo, S.-W. Lee, K.-J. Lee, T. Ono,
    Attenuation of propagating spin wave induced by layered nano structures,
    Applied Physics Letters 100, 132411 (2012).
    doi.org/10.1063/1.3699020
  • K. Sekiguchi, K.Yamada, S.-M. Seo, K.-J. Lee,D. Chiba, K. Kobayashi, and T. Ono,
    Time-Domain Measurement of Current-Induced Spin Wave Dynamics,
    Physical Review Letters 108, 017203(2012).
    doi.org/10.1103/PhysRevLett.108.017203

    ∼ 2011 ∼

  • K. Nakano, D. Chiba, N. Ohshima, S. Kasai, T. Sato, Y. Nakatani, K. Sekiguchi, K. Kobayashi, and T. Ono,
    All-electrical operation of magnetic vortex core memory cell,
    Applied Physics Letters 99, 262505 (2011).
    doi:10.1063/1.3673303
  • Y. Yamauchi, K. Sekiguchi, K. Chida, T. Arakawa, S. Nakamura, K. Kobayashi, T. Ono, T. Fujii, and R. Sakano,
    Evolution of the Kondo effect in a quantum dot probed by shot noise,
    Physical Review Letters 106, 176601 (2011).
    10.1103/PhysRevLett.106.176601
  • T. Arakawa, K. Sekiguchi, S. Nakamura, K. Chida, K. Kobayashi, A. Fukushima, S. Yuasa, and T. Ono,
    Sub-Poissonian shot noise in CoFeB/MgO/CoFeB-based junctions magnetic tunnel,
    Applied Physics Letters 98, 202103 (2011).
    doi.org/10.1063/1.3590921

    ∼ 2010 ∼

  • K. Sekiguchi, T. Arakawa, Y. Yamauchi, K. Chida, M. Ya- mada, H. Takahashi, D. Chiba, K. Kobayashi and T. Ono
    Observation of full shot noise in CoFeB/MgO /CoFeB based magnetic tunnel junctions,
    Applied Physics Letters 96, 252504 (2010).
    doi.org/10.1063/1.3456548
  • K. Sekiguchi, K. Yamada, S. M. Seo, K. J. Lee, D. Chiba, K. Kobayashi, and T. Ono,
    Nonreciprocal emission of spin-wave packet in FeNi film,
    Applied Physics Letters 97, 022508 (2010).
    doi:10.1063/1.3464569
  • K. Nakano, D. Chiba, K. Sekiguchi, S. Kasai, N. Ohshima, K. Kobayashi, and T. Ono,
    Electrical detection of vortex core polarity in ferromagnetic disk,
    Applied Physics Express 3, 053001 (2010).
    doi.org/10.1143/APEX.3.053001

    ∼ 2008∼

  • K. Sekiguchi, A.Yamaguchi, H. Miyajima, andA. Hirohata,
    Effect of Ferromagnetism on AB oscillations in a Normal-Metal Ring,
    Physical Review B rapid communications 77, 140401 (2008).
    doi.org/10.1103/PhysRevB.77.140401
  • K. Sekiguchi, A. Yamaguchi, H. Miyajima, A. Hirohata, and S. Usui,
    Observation of a bias- dependent constrained mag- netic wall in a Ni point contact,
    Physical Review B 78, 224418 (2008).
    doi.org/10.1103/PhysRevB.78.224418

    • Press release



  • Koji SEKIGUCHI, Hiroaki SUKEGAWA
    Development in magnon transistor,
    Keio Univ.、NIMS, (2017).
    [Development in magnon transistor], NIKKEI Sangyo, NIKKEI(web), OPTRONICS(web), Tsukuba Science news(web).

  • Taichi GOTO、Koji SEKIGUCHI
    Logic Operation with magnetic waves,
    JST, Toyohashi Univ. of Technology, Keio Univ., (2017).
    [Logic Operation with magnetic waves], NIKKEI(web), OPTRONICS(web), EE Times Japan.

  • Taichi GOTO、Koji SEKIGUCHI
    Logic gate demo using volume spin wave propagating noise-suppressed magnetic oxide,
    JST, Toyohashi Univ. of Technology, Keio Univ.、(2016).
    [Logic gate demo using volume spin wave propagating noise-suppressed magnetic oxide], OPTRONICS(web).

  • Koji SEKIGUCHI,
    Demonstration of basic logic operation using spin wave interference,
    JST, Keio Univ., (2013).
    [Demonstration of basic logic operation using spin wave interference], NIKKEI, NIKKEI Sangyo, Nikkan Kogyo , Japan Chemical Daily, Asahi Weekly.