Effects of Intraatomic Coulomb Interaction in the Time-Dependent Newns-Anderson Model
Effects of Intraatomic Coulomb interaction are investigated in the time-dependent Newns-Anderson model with the use of the time-dependent Hartree-Fock approximation. The simplest time-dependence is chosen for parameters in the Hamiltonian and nonadiabatic effects are examined when the system crosses the boundary between the “nonmagnetic and magnetic” regions. Some asymmetry in spin space is inevitable for the system to cross the boundary in the present Hartree-Fock approximation. Then time-dependence corresponding to a slow limit is assumed for the parameters and energy dissipation is investigated.
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