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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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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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 / 半金属金属転移 / アンダーソン転移 / スケーリング理論 / 薄膜 / 表面ランダムネス / Dirac電子 / Anderson転移 / ランダムネス / アンダーソン局在 / 量子ホール効果 / 量子スピンホール効果 / 国際研究者交流 |
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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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Report
(5 results)
Research Products
(23 results)
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[Journal Article] Experimental proof of universal conductance fluctuation in quasi-one-dimensional epitaxial Bi 2 Se 3 wires2013
Author(s)
Sadashige Matsuo, Kensaku Chida, Daichi Chiba, Teruo Ono, Keith Slevin, Kensuke Kobayashi, Tomi Ohtsuki, Cui-Zu Chang, Ke He, Xu-Cun Ma, Qi-Kun Xue
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Journal Title
Physical Review B
Volume: 88
Issue: 15
Pages: 155438-155438
DOI
Related Report
Peer Reviewed
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