Search for novel electron spin filter using spin-polarized surface states
Project/Area Number |
26887024
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Condensed matter physics I
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Research Institution | Osaka University |
Principal Investigator |
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Project Period (FY) |
2014-08-29 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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Keywords | スピントロニクス / 表面電子状態 / 電子線スピンフィルタ / スピンフィルタ / スピン軌道相互作用 / スピン・角度分解光電子分光 |
Outline of Final Research Achievements |
We are interested in the spin-filtering functionality of electron beam, which is a typical example of spintronics application using both of two character of electrons (charge and spin). For this study, we have (i) established the experimental method how to observe the spin-filtering functionality of electron beam and (ii) searched for the novel candidate of such electron-beam spin filter with hich efficiency and long lifetime. We used a conventional electron gun and Mott-type spin detector and demonstrated that the combination of these components can directly detect the spin-selective electron scattering. We also found some new surface atomic structures on the InSb(001) surface covered with Bi, showing one-dimensional (1D) surface atomic structure. One of the 1D Bi/InSb(001) surface holds the surface state with large spin polarization and its possible application to future spintronics is expected.
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Report
(3 results)
Research Products
(18 results)
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[Journal Article] Spin to Charge Conversion at Room Temperature by Spin Pumping into a New Type of Topological Insulator: α-Sn Films2016
Author(s)
J-C Rojas-Sanchez, S Oyarzun, Y Fu, A Marty, C Vergnaud, S Gambarelli, L Vila, M Jamet, Y Ohtsubo, A Taleb-Ibrahimi, P Le Fevre, F Bertran, N Reyren, J-M George, A Fert
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Journal Title
Physical Review Letters
Volume: 116
Issue: 9
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Surface Tomonaga-Luttinger-liquid state on Bi/InSb(001)2015
Author(s)
Y. Ohtsubo, J. Kishi, K. Hagiwara, P. L. Fevre, F. Bertran, A. T. Ibrahimi, H. Yamane, S. Ideta, M. Matsunami, K. Tanaka, and S. Kimura
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Journal Title
Physical Review Letters
Volume: 115
Issue: 25
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Hierarchical spin-orbital polarization of a giant Rashba system2015
Author(s)
Lewis Bawden, Jonathan M Riley, Choong H Kim, Raman Sankar, Eric J Monkman, Daniel E Shai, Haofei I Wei, Edward B Lochocki, Justin W Wells, Worawat Meevasana, Timur K Kim, Moritz Hoesch, Yoshiyuki Ohtsubo, Patrick Le Fevre, Craig J Fennie, Kyle M Shen, Fangcheng Chou, Phil DC King
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Journal Title
Science Advances
Volume: 1
Issue: 8
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator2015
Author(s)
Madhab Neupane, Su-Yang Xu, R Sankar, Q Gibson, YJ Wang, I Belopolski, N Alidoust, G Bian, PP Shibayev, DS Sanchez, Y Ohtsubo, A Taleb-Ibrahimi, S Basak, W-F Tsai, H Lin, Tomasz Durakiewicz, RJ Cava, A Bansil, FC Chou, M Zahid Hasan
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Journal Title
Physical Review B
Volume: 92
Issue: 7
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Experimental evidence for two-dimensional states localized in subsurface region of Ge(111)2015
Author(s)
K. Yaji, Y. Ohtsubo, S. Hatta, H. Okuyama, R. Yukawa, I. Matsuda, P. Le Fevre, F. Bertran, A. Taleb-Ibrahimi, A. Kakizaki, T. Aruga
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Journal Title
J. Electron Spectros. Relat. Phenom
Volume: 201
Pages: 92-97
DOI
Related Report
Peer Reviewed
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[Presentation] 近藤絶縁体YbB12(001)表面の角度分解光電子分光2016
Author(s)
萩原健太, 大坪嘉之,岸潤一郎,松波雅治, 田中清尚, 伊藤孝寛,宮崎秀俊,伊賀文俊,J. Rault,P. Le Fevre, F. Bertran, A. Taleb-Ibrahimi,木村真一
Organizer
第29回日本放射光学会年会 放射光科学合同シンポジウム
Place of Presentation
東大物性研柏の葉キャンパス(千葉県 柏市)
Year and Date
2016-01-09
Related Report
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[Presentation] Bi単結晶のトポロジカル表面状態2015
Author(s)
大坪 嘉之, L. Perfetti, M.O. Goerbig, P. Le Fevre, F. Bertran, A. Taleb-Ibrahimi
Organizer
日本放射光学会年会 放射光科学合同シンポジウム
Place of Presentation
立命館大学(滋賀県)
Year and Date
2015-01-11
Related Report
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