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Valley-dependent spin polarization in bulk MoS2 with broken inversion symmetry
http://hdl.handle.net/2261/56499
http://hdl.handle.net/2261/5649958ff1f97-6024-41c5-9e77-ae43812a4265
名前 / ファイル | ライセンス | アクション |
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nnano.2014.148_author_version.pdf (1.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2015-02-26 | |||||
タイトル | ||||||
タイトル | Valley-dependent spin polarization in bulk MoS2 with broken inversion symmetry | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Suzuki, R.
× Suzuki, R.× Sakano, M.× Zhang, Y. J.× Akashi, R.× Morikawa, D.× Harasawa, A.× Yaji, K.× Kuroda, K.× Miyamoto, K.× Okuda, T.× Ishizaka, K.× Arita, R.× Iwasa, Y. |
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著者所属 | ||||||
著者所属 | Quantum-Phase Electronics Centre (QPEC) and Department of Applied Physics, University of Tokyo | |||||
著者所属 | ||||||
著者所属 | RIKEN Centre for Emergent Matter Science | |||||
著者所属 | ||||||
著者所属 | Institute for Solid State Physics, University of Tokyo | |||||
著者所属 | ||||||
著者所属 | Graduate School of Science, Hiroshima University | |||||
著者所属 | ||||||
著者所属 | Hiroshima Synchrotron Radiation Centre, Hiroshima University | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The valley degree of freedom of electrons is attracting growing interest as a carrier of information in various materials, including graphene, diamond and monolayer transition-metal dichalcogenides. The monolayer transition-metal dichalcogenides are semiconducting and are unique due to the coupling between the spin and valley degrees of freedom originating from the relativistic spin–orbit interaction. Here, we report the direct observation of valley-dependent out-of-plane spin polarization in an archetypal transition-metal dichalcogenide—MoS2—using spin- and angle-resolved photoemission spectroscopy. The result is in fair agreement with a first-principles theoretical prediction. This was made possible by choosing a 3R polytype crystal, which has a non-centrosymmetric structure, rather than the conventional centrosymmetric 2H form. We also confirm robust valley polarization in the 3R form by means of circularly polarized photoluminescence spectroscopy. Non-centrosymmetric transition-metal dichalcogenide crystals may provide a firm basis for the development of magnetic and electric manipulation of spin/valley degrees of freedom. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | UTokyo Research掲載「バレートロニクス材料の提案」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/a-proposed-valleytronics-material/ | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | UTokyo Research "A proposed valleytronics material" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/a-proposed-valleytronics-material/ | |||||
書誌情報 |
Nature nanotechnology 巻 9, p. 611-617, 発行日 2014-07-27 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1748-3387 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1748-3395 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12163154 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1038/nnano.2014.148 | |||||
権利 | ||||||
権利情報 | Copyright (C) 2014, 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/a-proposed-valleytronics-material/ | |||||
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/a-proposed-valleytronics-material/ | |||||
関係URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.nature.com/nnano/journal/v9/n8/full/nnano.2014.148.html |