2015 Fiscal Year Final Research Report
Quantum transport in disordered topological insulators
| Project/Area Number |
23540376
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Sophia University |
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Principal Investigator |
OHTSUKI Tomi 上智大学, 理工学部, 教授 (50201976)
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| Co-Investigator(Renkei-kenkyūsha) |
SLEVIN Keith 大阪大学, 大学院理学系研究科, 准教授 (90294149)
IMURA Ken-Ichiro 広島大学, 先端物質科学研究科, 助教 (90391870)
KAWARABAYASHI Tohru 東邦大学, 理学部, 教授 (90251488)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Keywords | トポロジカル絶縁体 / Dirac半金属 / ワイル半金属 / 状態密度 / スケーリング / 臨界指数 / 相図 |
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| Outline of Final Research Achievements |
We have studied the disordered topological insulators in two and three dimensions. We first estimated the critical exponents in two dimensional quantum Hall and quantum spin Hall transitions with high accuracy. We then determined the phase diagram of disordered three dimensional topological insulators. In addition, we have analyzed the semi-metal to metal transition of Dirac semi-metals that appear on the phase boundary via the scaling of density of states.
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| Free Research Field |
物性理論
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