2011 Fiscal Year Final Research Report
Theoretical Study of impurity effects in topological insulators and superconductors
| Project/Area Number |
21540332
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
FURUSAKI Akira 独立行政法人理化学研究所, 古崎物性理論研究室, 主任研究員 (10238678)
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| Project Period (FY) |
2009 – 2011
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| Keywords | トポロジカル絶縁体 / トポロジカル超伝導体 / 量子スピンホール効果 / ディラック・フェルミオン / アンダーソン局在 / ネットワーク模型 / マヨラナ・フェルミオン / 近藤効果 |
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| Research Abstract |
Kondo effects of electronic and thermal transport at edges of topological insulators are studied theoretically. Exchange coupling of a magnetic impurity and Majorana fermion edge states in two-dimensional topological superconductors is shown to be anisotropic. Anderson localization caused by impurities in two-dimensional topological insulators and superconductors is studied both analytically and numerically using network models. Furthermore, the classification theory of topological insulators and superconductors is revisited.
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