Floquet engineering of electric polarization with two-frequency drive
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- Yuya Ikeda
- Department of Applied Physics, The University of Tokyo, Hongo, Tokyo, 113-8656, Japan
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- Sota Kitamura
- Department of Applied Physics, The University of Tokyo, Hongo, Tokyo, 113-8656, Japan
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- Takahiro Morimoto
- Department of Applied Physics, The University of Tokyo, Hongo, Tokyo, 113-8656, Japan
説明
<jats:title>Abstract</jats:title> <jats:p>Electric polarization is a geometric phenomenon in solids and has a close relationship to the symmetry of the system. Here we propose a mechanism to dynamically induce and manipulate electric polarization by using an external light field. Specifically, we show that application of bicircular lights controls the rotational symmetry of the system and can generate electric polarization. To this end, we use Floquet theory to study a system subjected to a two-frequency drive. We derive an effective Hamiltonian with high-frequency expansions, for which the electric polarization is computed with the Berry phase formula. We demonstrate the dynamical control of polarization for a one-dimensional Su–Shrieffer–Heeger chain, a square lattice model, and a honeycomb lattice model.</jats:p>
収録刊行物
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- Progress of Theoretical and Experimental Physics
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Progress of Theoretical and Experimental Physics 2022 (4), 2021-10-30
Oxford University Press (OUP)
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キーワード
詳細情報 詳細情報について
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- CRID
- 1360294643833590144
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- ISSN
- 20503911
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE
