2015 Fiscal Year Final Research Report
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 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2014-08-29 – 2016-03-31
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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 |
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| 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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| Free Research Field |
数物系科学
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