Light-induced switching of magnetic order in the anisotropic triangular-lattice Hubbard model

Hayato Kobayashi, Ryo Fujiuchi, Koudai Sugimoto, Yukinori Ohta

研究成果: Article査読

抄録

The time-dependent exact-diagonalization method is used to study the light-induced phase transition of magnetic orders in the anisotropic triangular-lattice Hubbard model. Calculating the spin correlation function, we confirm that the phase transition from the 120° order to the Néel order can take place due to high-frequency periodic fields. We show that the effective Heisenberg-model Hamiltonian derived from the high-frequency expansion by the Floquet theory describes the present system very well and that the ratio of the exchange interactions expressed in terms of the frequency and amplitude of the external field determines the type of the magnetic orders. Our results demonstrate the controllability of the magnetic orders by tuning the external field.

本文言語English
論文番号L161106
ジャーナルPhysical Review B
103
16
DOI
出版ステータスPublished - 2021 4 14

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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