2012 Fiscal Year Final Research Report
Development of novel transport phenomena generated by Dirac electrons in solids
| Project/Area Number |
23740269
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Electro-Communications (2012)
Osaka University (2011) |
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Principal Investigator |
FUSEYA Yuki 電気通信大学, 大学院・情報理工学研究科, 准教授 (00377954)
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| Project Period (FY) |
2011 – 2012
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| Keywords | ディラック電子 / スピン軌道相互作用 / スピン流 |
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| Research Abstract |
Spin-transport phenomena of Dirac electrons in solids are investigated on the basis of the linear response theory and the Kubo formula. It is shown that the fully spin-polarized electric current is possible by using the circularly polarized light. It is also shown that the spin-Hall insulator is achieved for the Dirac electron systems. Surprisingly, it is found that the formula of the spin-Hall insulator has the exactly same form as that of the diamagnetic susceptibility. By the collaboration with the experimental group, it is shown that the angle resolved Landau spectrum can be correctly fitted by the extended Dirac model up to 30 tesla, and the mysterious peak structure can be understood as the twinning effect.
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