Gilbert damping in metallic ferromagnets from Schwinger-Keldysh field theory: Intrinsically nonlocal, nonuniform, and made anisotropic by spin-orbit coupling
F Reyes-Osorio, BK Nikolić - Physical Review B, 2024 - APS
Understanding the origin of damping mechanisms in the magnetization dynamics of metallic
ferromagnets is a fundamental problem for nonequilibrium many-body physics of systems in …
ferromagnets is a fundamental problem for nonequilibrium many-body physics of systems in …
Quantifying the accuracy of steady states obtained from the universal Lindblad equation
We show that steady-state expectation values predicted by the universal Lindblad equation
(ULE) are accurate up to bounded corrections that scale linearly with the effective system …
(ULE) are accurate up to bounded corrections that scale linearly with the effective system …
Gilbert damping in metallic ferromagnets from Schwinger-Keldysh field theory: Nonlocality, nonuniformity, and anisotropy in the presence of spin-orbit coupling
F Reyes-Osorio, BK Nikolic - arXiv preprint arXiv:2306.13013, 2023 - arxiv.org
Understanding the origin of damping mechanisms in magnetization dynamics of metallic
ferromagnets is a fundamental problem for nonequilibrium many-body physics of systems …
ferromagnets is a fundamental problem for nonequilibrium many-body physics of systems …
Geometrical torque on magnetic moments coupled to a correlated antiferromagnet
N Lenzing, D Krüger, M Potthoff - Physical Review Research, 2023 - APS
The geometrical spin torque mediates an indirect interaction of magnetic moments, which
are weakly exchange coupled to a system of itinerant electrons. It originates from a finite …
are weakly exchange coupled to a system of itinerant electrons. It originates from a finite …
Schwinger-Keldysh nonequilibrium quantum field theory of open quantum systems beyond the Markovian regime: Application to the spin-boson model
We develop a Schwinger-Keldysh field theory (SKFT) for open quantum systems interacting
with a dissipative environment and apply it to the spin-boson model as an archetypical …
with a dissipative environment and apply it to the spin-boson model as an archetypical …
Reconciling Kubo and Keldysh Approaches to Fermi-Sea-Dependent Nonequilibrium Observables: Application to Spin Hall Current and Spin-Orbit Torque in …
SM Joao, MD Petrovic, JM Lopes, A Ferreira… - arXiv preprint arXiv …, 2024 - arxiv.org
Quantum transport studies of spin-dependent phenomena in solids commonly employ the
Kubo or Keldysh formulas for the steady-state density matrix in the linear-response regime …
Kubo or Keldysh formulas for the steady-state density matrix in the linear-response regime …