Floquet theory of photoinduced topological phase transitions in the organic salt α-(BEDT-TTF)2I3 irradiated with elliptically polarized light

Keisuke Kitayama, Yasuhiro Tanaka, Masao Ogata, Masahito Mochizuki

研究成果: Article査読

抄録

We theoretically investigate possible photoinduced topological phase transitions in the organic salt α-(BEDT-TTF)2I3, which possesses a pair of inclined massless Dirac-cone bands between the conduction and valence bands under uniaxial pressure. The Floquet analyses of a driven tight-binding model for this material reveal rich photoinduced variations of band structures, Chern numbers, and Hall conductivities under irradiation with elliptically polarized light. The obtained phase diagrams contain a variety of nonequilibrium steady phases, e.g., the Floquet Chern insulator, Floquet semimetal, and Floquet normal insulator phases. This work widens a scope of target materials for research on photoinduced topological phase transitions and contributes to development of research on the optical manipulations of electronic states in matters.

本文言語English
論文番号104705
ジャーナルjournal of the physical society of japan
90
10
DOI
出版ステータスPublished - 2021 10 15

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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