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Quantum Hall effect on top and bottom surface states of topological insulator (Bi1−xSbx)2Te3 films
http://hdl.handle.net/2261/58607
http://hdl.handle.net/2261/58607366e89ad-37f5-4be9-a8ee-bf7754dff0f3
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ncomms7627_author_version.pdf (1.4 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2015-10-20 | |||||
| タイトル | ||||||
| タイトル | Quantum Hall effect on top and bottom surface states of topological insulator (Bi1−xSbx)2Te3 films | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Physical sciences | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Applied physics | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Condensed matter | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Yoshimi, R.
× Yoshimi, R.× Tsukazaki, A.× Kozuka, Y.× Falson, J.× Takahashi, K. S.× Checkelsky, J. G.× Nagaosa, N.× Kawasaki, M.× Tokura, Y. |
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| 著者所属 | ||||||
| 著者所属 | Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo | |||||
| 著者所属 | ||||||
| 著者所属 | Institute for Materials Research, Tohoku University | |||||
| 著者所属 | ||||||
| 著者所属 | PRESTO, Japan Science and Technology Agency (JST) | |||||
| 著者所属 | ||||||
| 著者所属 | RIKEN Center for Emergent Matter Science (CEMS) | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The three-dimensional topological insulator is a novel state of matter characterized by two-dimensional metallic Dirac states on its surface. To verify the topological nature of the surface states, Bi-based chalcogenides such as Bi2Se3, Bi2Te3, Sb2Te3 and their combined/mixed compounds have been intensively studied. Here, we report the realization of the quantum Hall effect on the surface Dirac states in (Bi1−xSbx)2Te3 films. With electrostatic gate-tuning of the Fermi level in the bulk band gap under magnetic fields, the quantum Hall states with filling factor ±1 are resolved. Furthermore, the appearance of a quantum Hall plateau at filling factor zero reflects a pseudo-spin Hall insulator state when the Fermi level is tuned in between the energy levels of the non-degenerate top and bottom surface Dirac points. The observation of the quantum Hall effect in three-dimensional topological insulator films may pave a way toward topological insulator-based electronics. | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research掲載「トポロジカル絶縁体の表面ディラック状態の量子化を実証」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/observation-of-quantization-in-surface-dirac-states-of-topological-insulator.html | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research "Observation of quantization in surface Dirac states of topological insulator" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/observation-of-quantization-in-surface-dirac-states-of-topological-insulator.html | |||||
| 書誌情報 |
Nature communications 巻 6, p. 6627, 発行日 2015-04-14 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 20411723 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA12645905 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1038/ncomms7627 | |||||
| 権利 | ||||||
| 権利情報 | Copyright © 2015, Rights Managed by Nature Publishing Group | |||||
| 著者版フラグ | ||||||
| 値 | author | |||||
| 出版者 | ||||||
| 出版者 | Nature Publishing Group | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/observation-of-quantization-in-surface-dirac-states-of-topological-insulator.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/observation-of-quantization-in-surface-dirac-states-of-topological-insulator.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.nature.com/ncomms/2015/150414/ncomms7627/abs/ncomms7627.html | |||||
