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Topological Domain Wall and Valley Hall Effect in Charge Ordered Phase of Molecular Dirac Fermion System α-(BEDT-TTF)2I3
http://hdl.handle.net/2237/25287
28c333c1-bebb-47e5-8650-4b3642a59b7e
名前 / ファイル | ライセンス | アクション | |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2016-12-22 | |||||
タイトル | ||||||
タイトル | Topological Domain Wall and Valley Hall Effect in Charge Ordered Phase of Molecular Dirac Fermion System α-(BEDT-TTF)2I3 | |||||
著者 |
Matsuno, Genki
× Matsuno, Genki× Omori, Yukiko× Eguchi, Takaaki× Kobayashi, Akito |
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権利 | ||||||
権利情報 | Copyright ©2016 The Physical Society of Japan 日本物理学会 | |||||
抄録 | ||||||
内容記述 | The topological domain wall and valley Hall effect are theoretically investigated in the molecular conductor α-(BEDT-TTF)2I3. By using the mean-field theory in an extended Hubbard model, it is demonstrated under a cylinder boundary condition that a domain wall emerges in the charge ordered phase, and exhibits a topological nature near the phase transition to the massless Dirac Fermion phase. The topological nature is well characterized by the Berry curvature, which has opposite signs in two charge ordered phases divided by the domain wall, and gives rise to the valley Hall conductivity with opposite signs, enabling these phases to be distinguished. It is also found that the valley Hall conductivity in the tilted Dirac cones exhibits a characteristic double-peak structure as a function of chemical potential using the semi classical formalism. | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
出版者 | 日本物理学会 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0031-9015 | |||||
書誌情報 |
Journal of the Physical Society of Japan 巻 85, p. 094710-094710, 発行日 2016-09-15 |
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著者版フラグ | ||||||
値 | author | |||||
URI | ||||||
識別子 | http://doi.org/10.7566/JPSJ.85.094710 | |||||
識別子タイプ | DOI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/25287 | |||||
識別子タイプ | HDL |