2010 Fiscal Year Final Research Report
Magnetic resistance effect of surface nano-structures with spin-split electronic states
| Project/Area Number |
21760027
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Kyoto University |
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Principal Investigator |
HATTA Shinichiro Kyoto University, 理学研究科, 助教 (70420396)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 表面 |
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| Research Abstract |
For the purpose of measuring magnetic resistance effect of surface nano-structures, a 4-point probe resistance measurement system and an electromagnet coil have been developed in an ultra-high vacuum (UHV) chamber. On the basis of the measurement on a polycrystalline Ni foil, the accuracy of the resistance measurement was evaluated to be ～0.1μΩ. Besides, the electronic structures of the surface superstructures on Ge(111) induced by adsorption of Bi and Pb were studied by angle-resolved photoelectron spectroscopy (ARPES) and spin-resolved ARPES. Large spin splittings exceeding 200meV were found for surface-state or surface-resonance bands.
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