Relaxation of a classical spin coupled to a strongly correlated electron system

Abstract

A classical spin which is antiferromagnetically coupled to a system of strongly correlated conduction electrons is shown to exhibit unconventional real-time dynamics which cannot be described by Gilbert damping. Depending on the strength of the local Coulomb interaction, the two main electronic dissipation channels, transport of excitations via correlated hopping and via excitations of correlation-induced magnetic moments, become active on largely different time scales. We demonstrate that this can lead to a prethermalization scenario which so far has been observed in purely electronic systems only and which is governed here by proximity to the divergent magnetic time scale in the infinite-U limit.

5+3 pages, 5 figures, v2 as published in PRL

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Cited by in corpus (18)

• Time-retarded damping and magnetic inertia in the Landau-Lifshitz-Gilbert equation self-consistently coupled to electronic time-dependent nonequilibrium Green functions
• Spin dynamics of itinerant electrons: local magnetic moment formation and Berry phase
• Non-local Gilbert damping tensor within the torque-torque correlation model
• Anomalous spin precession under a geometrical torque
• Inertia effects in the real-time dynamics of a quantum spin coupled to a Fermi sea
• Topological spin torque emerging in classical-spin systems with different time scales
• Accessing long timescales in the relaxation dynamics of spins coupled to a conduction-electron system using absorbing boundary conditions
• Long-time relaxation dynamics of a spin coupled to a Chern insulator
• Emergent Non-Abelian Gauge Theory in Coupled Spin-Electron Dynamics
• Spin Berry curvature of the Haldane model
• Dynamics of spin relaxation in nonequilibrium magnetic nanojunctions
• Nonequilibrium dynamics in a spin valve with noncollinear magnetization
• Non-Hamiltonian dynamics of indirectly coupled classical impurity spins
• Prerelaxation in quantum, classical, and quantum-classical two-impurity models
• Microscopic theory of spin friction and dissipative spin dynamics
• Spin transport through a nanojunction with a precessing anisotropic molecular spin: Quantum interference and spin-transfer torque
• Geometrical torque on magnetic moments coupled to a correlated antiferromagnet
• Symmetry-forbidden intraband transitions leading to ultralow Gilbert damping in van der Waals ferromagnets