ID | 65513 |
フルテキストURL | |
著者 |
Adachi, Hiroto
Research Institute for Interdisciplinary Science, Okayama University
ORCID
Kaken ID
publons
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Ikeda, Naoshi
Department of Physics, Okayama University
Saitoh, Eiji
Department of Applied Physics, The University of Tokyo
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抄録 | In comparison to transport of spin polarization in ferromagnets, transport of electric polarization in ferroelectrics remains less explored. Taking an excitonic insulator model of electronic ferroelectricity as a prototypical example, we theoretically investigate the low-energy dynamics and transport of electric polarization by microscopically constructing the Ginzburg-Landau action. We show that, because of the scalar nature of the excitonic order parameter, only the longitudinal fluctuations are relevant to the transport of electric polarization. We also formulate the electric-polarization diffusion equation, in which the electric-polarization current is defined purely electronically without recourse to the lattice degrees of freedom.
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発行日 | 2023-04-25
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出版物タイトル |
Physical Review B
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巻 | 107巻
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号 | 15号
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出版者 | American Physical Society (APS)
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開始ページ | 155142
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ISSN | 2469-9950
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NCID | AA11187113
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | ©2023 American Physical Society
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論文のバージョン | publisher
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DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1103/PhysRevB.107.155142
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助成機関名 |
Japan Society for the Promotion of Science
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助成番号 | JP19H05600
22H01941
22H01942
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