TY - JOUR
T1 - Light-induced switching of magnetic order in the anisotropic triangular-lattice Hubbard model
AU - Kobayashi, Hayato
AU - Fujiuchi, Ryo
AU - Sugimoto, Koudai
AU - Ohta, Yukinori
N1 - Funding Information:
This work was supported in part by Grants-in-Aid for Scientific Research from JSPS (Projects No. JP17K05530, No. JP19J20768, No. JP19K14644, and No. JP20H01849). R.F. acknowledges support from the JSPS Research Fellowship for Young Scientists. We acknowledge the use of open-source software .
Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/4/14
Y1 - 2021/4/14
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.103.L161106
DO - 10.1103/PhysRevB.103.L161106
M3 - Article
AN - SCOPUS:85104466418
SN - 2469-9950
VL - 103
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 16
M1 - L161106
ER -