Nonequilibrium Extension of the Landau-Lifshitz-Gilbert Equation for Magnetic Systems
Jeongwon Ho, B. C. Choi, F. C. Khanna, Sang Pyo Kim
Abstract
Using the invariant operator method for an effective Hamiltonian including the radiation-spin interaction, we describe the quantum theory for magnetization dynamics when the spin system evolves nonadiabatically and out of equilibrium, d ρ/dt ≠ 0. It is shown that the vector parameter of the invariant operator and the magnetization defined with respect to the density operator, both satisfying the quantum Liouville equation, still obey the Landau-Lifshitz-Gilbert equation.
Create a lesson
Related papers
Revealing New Leakage Paths in GAAFETs using Predictive First-Principles Simulations
Denis Mamaluy, Juan P. Mendez, Coleman Cariker et al.
Ultrafast laser-stimulated field emission from a metal: a non-equilibrium Green's functions approach
Luciano Jacopo D'Onofrio, Adolfo Avella, Martin Eckstein
Three-dimensional dopant distribution from a single, out-of-focus spectroscopic image
Michael Deimetry, Timothy Petersen, Matthew Weyland et al.
A nonclassical law of the wall in superfluid helium-4
Mikai Hulse, Musfequs Salehin, Sosuke Inui et al.
Progress and Prospect of AI in ARPES Workflow
Sandy Adhitia Ekahana, Aalok Tiwari, Pratik Saud et al.
Magnon Polarization Textures and Transport in Antiferromagnets and Altermagnets
Konstantin S. Denisov, Igor Žutić