Floquet theory of spin dynamics under circularly polarized light pulses

Abstract

Within the Floquet theory of periodically driven quantum systems, the nonlinear single-spin dynamics under pulse of a circularly polarized electromagnetic field is analyzed. It is demonstrated that the field, first, lifts the spin degeneracy and, second, the field-induced spin splitting is accompanied by the photon emission at the spitting frequency. This two-stage process leads, particularly, to the polarization of spins along angular momentum of the circularly polarized field. As a result, the pulse-induced magnetization appears, what can be observed in state-of the-art measurements.

arXiv commentPublished version

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Cited by in corpus (7)

• Contrasting Light-Induced Spin Torque in Antiferromagnetic and Altermagnetic Systems
• Floquet engineering of the Lifshitz phase transition in the Hubbard model
• Optically induced resonant tunneling of electrons in nanostructures
• Developing a semiclassical Wentzel-Kramers-Brillouin theory for $\alpha -{\mathcal{T}}_3$ model
• Anomalous radiation reaction in a circularly polarized field
• Optically induced delocalization of electrons bound by attractive potentials
• Elementary excitations in the hybrid Bose-Fermi system induced by circularly polarized light in a two-dimensional gas of charge carriers with different masses