Floquet engineering of electric polarization with two-frequency drive

Abstract 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...

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Bibliographic Details
Published inProgress of theoretical and experimental physics Vol. 2022; no. 4
Main Authors Ikeda, Yuya, Kitamura, Sota, Morimoto, Takahiro
Format Journal Article
LanguageEnglish
Published Oxford Oxford University Press 01.04.2022
Subjects
Crystal structure
Electric fields
Engineering
Symmetry
I84
A57
I92
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Summary:Abstract 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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:2050-3911
2050-3911
DOI:10.1093/ptep/ptab127