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Sudden restoration of the band ordering associated with the ferromagnetic phase transition in a semiconductor
http://hdl.handle.net/2261/59539
http://hdl.handle.net/2261/595396f39a53d-09b3-48ae-91e2-f7086b5b3c74
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ncomms12013.pdf (867.5 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2016-06-30 | |||||
| タイトル | ||||||
| タイトル | Sudden restoration of the band ordering associated with the ferromagnetic phase transition in a semiconductor | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Condensed matter | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Physical sciences | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Materials science | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Muneta, Iriya
× Muneta, Iriya× Ohya, Shinobu× Terada, Hiroshi× Tanaka, Masaaki |
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| 著者所属 | ||||||
| 著者所属 | Department of Electrical Engineering and Information Systems, The University of Tokyo | |||||
| 著者所属 | ||||||
| 著者所属 | Center for Spintronics Research Network, Graduate School of Engineering, The University of Tokyo | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The band ordering of semiconductors is an important factor in determining the mobility and coherence of the wave function of carriers, and is thus a key factor in device performance. However, in heavily doped semiconductors, the impurities substantially disturb the band ordering, leading to significant degradation in performance. Here, we present the unexpected finding that the band ordering is suddenly restored in Mn-doped GaAs ((Ga,Mn)As) when the Mn concentration slightly exceeds B0.7% despite the extremely high doping concentration; this phenomenon is very difficult to predict from the general behaviour of doped semiconductors. This phenomenon occurs with a ferromagnetic phase transition, which is considered to have a crucial role in generating a well-ordered band structure. Our findings offer possibilities for ultra-high-speed quantum-effect spin devices based on semiconductors. | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research掲載「半導体の基礎物理学で新たな発見」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/new-discovery-in-semiconductor-physics.html | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research "New discovery in semiconductor physics" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/new-discovery-in-semiconductor-physics.html | |||||
| 書誌情報 |
Nature communications 巻 7, p. 12013, 発行日 2016-06-28 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2041-1723 | |||||
| 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/ncomms12013 | |||||
| 権利 | ||||||
| 権利情報 | © The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| 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/new-discovery-in-semiconductor-physics.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/new-discovery-in-semiconductor-physics.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://dx.doi.org/10.1038/ncomms12013 | |||||
