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2017 年度 実績報告書

スピントロニクスに向けた層状材料表面の知的設計

研究課題

研究課題/領域番号 16J01006
研究機関明石工業高等専門学校

研究代表者

Arguelles Elvis Flaviano  明石工業高等専門学校, その他部局等, 特別研究員(PD) (50816072)

研究期間 (年度) 2016-04-22 – 2018-03-31
キーワードgraphene / nanosheet / magnetic atom / magnetic exchange / nuclear spin / metal surface
研究実績の概要

This year, the adsorption and absorption of magnetic atoms represented by Co on bilayer graphene nanosheets and the second is the interaction of gas molecules on the surface of metal electrodes. It is found that the crystal fields with C3v symmetry split the Co’s 3d orbitals into two doubly degenerate irreducible representations E1 (dxz,dyz) and E2 (dx2-y2,dxy) and a one-dimensional representation A1(d3z2-r2). Further, the estimated magnetic exchange interactions exhibit ferromagnetic exchange coupling between the localized spins of Co.

To model the simplest molecule-surface interactions, H2 adsorption on Pd(210) has been investigated. It is found that H2 is in the molecularly chemisorbed state and the adsorption is characterized by a highly anisotropic potential energy surface. Rotational-vibrational calculations show that two lowest bound state levels belong to J=0 and 1 species, respectively. It is further known that H2 adsorbates drastically affect the electronic properties of the metal surface. Since H2 can practically be separated into two nuclear spin isomers, nuclear spin states interconversion is found to proceed at a very fast rate on Pd(210).This results to a molecule in a different nuclear spin state and a magnetic metal surface.

The accounts of this research have been published to international scientific journals and presented in numerous domestic and international conferences.

現在までの達成度 (段落)

29年度が最終年度であるため、記入しない。

今後の研究の推進方策

29年度が最終年度であるため、記入しない。

  • 研究成果

    (9件)

すべて 2018 2017

すべて 雑誌論文 (4件) (うち国際共著 3件、 査読あり 3件) 学会発表 (5件) (うち国際学会 2件、 招待講演 1件)

  • [雑誌論文] Rotational state modification and fast ortho-para conversion of H2 trapped within the highly anisotropic potential of Pd(210)2018

    • 著者名/発表者名
      Ohno S.、Ivanov D.、Ogura S.、Wilde M.、Arguelles E. F.、Dino W. A.、Kasai H.、Fukutani K.
    • 雑誌名

      Physical Review B

      巻: 97 ページ: 085436

    • DOI

      https://doi.org/10.1103/PhysRevB.97.085436

    • 査読あり / 国際共著
  • [雑誌論文] Hindered rotation and nuclear spin isomers separation of molecularly chemisorbed H2 on Pd(210)2018

    • 著者名/発表者名
      Arguelles Elvis F.、Kasai Hideaki
    • 雑誌名

      Journal of Applied Physics

      巻: 123 ページ: 115301~115301

    • DOI

      https://doi.org/10.1063/1.5021994

    • 査読あり / 国際共著
  • [雑誌論文] Bound nuclear spin states of H2 in an anisotropic potential induced by a stepped metal surface2018

    • 著者名/発表者名
      Arguelles Elvis F.、Kasai Hideaki
    • 雑誌名

      Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films

      巻: 36 ページ: 030601~030601

    • DOI

      https://doi.org/10.1116/1.5023158

    • 査読あり / 国際共著
  • [雑誌論文] Optical control of magnetization dynamics in Gd?Fe?Co films with different compositions2017

    • 著者名/発表者名
      Ohkochi Takuo、Fujiwara Hidenori、Kotsugi Masato、Takahashi Hirokazu、Adam Roman、Sekiyama Akira、Nakamura Tetsuya, Tsukamoto Arata, Schneider Claus M, Kuroda Hiroto, Arguelles Elvis F., Sakaue Mamoru, Kasai Hideaki, Tsunoda Masakiyo, Suga Shigemasa, Kinoshita Toyohiko
    • 雑誌名

      Applied Physics Express

      巻: 10 ページ: 103002~103002

    • DOI

      https://doi.org/10.7567/APEX.10.103002

  • [学会発表] Interstital impurity induced magnetism on lead oxide surface2017

    • 著者名/発表者名
      Arguelles E F, Amino S, Aspera S, Nakanishi H, Kasai H, Dino W A
    • 学会等名
      European Conference on Surface Science (ECOSS33)
    • 国際学会
  • [学会発表] Nuclear bound states of H2 on a stepped metal surface2017

    • 著者名/発表者名
      Arguelles E F, Kasai H, Fukutani K, Yajima A, Nakayama K, Yamashita S, Dino W A
    • 学会等名
      European Conference on Surface Science (ECOSS33)
    • 国際学会
  • [学会発表] Bound nuclear spin states of H2 on a stepped metal surface2017

    • 著者名/発表者名
      Elvis F. Arguelles, Hiroshi Nakanishi, Hideaki Kasai, Katsuyuki Fukutani, Wilson Agerico Dino
    • 学会等名
      9th Asian Computational Materials Design (CMD Asia) Workshop
    • 招待講演
  • [学会発表] H2 nuclear spin isomer transition on a stepped metal surface2017

    • 著者名/発表者名
      Elvis F. Arguelles, Hiroshi Nakanishi, Hideaki Kasai, Katsuyuki Fukutani, Wilson Agerico Dino
    • 学会等名
      2017 Fall Meeting, Japan Physical Society (JPS)
  • [学会発表] Interstitial impurity-induced magnetism in a layered oxide surface2017

    • 著者名/発表者名
      E. Arguelles S. Amino, S. Aspera, H. Nakanishi and H. Kasai
    • 学会等名
      78th Japan Society of Applied Physics (JSAP) Autumn Meeting

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公開日: 2018-12-17  

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