Nonequilibrium orbital magnetization of strongly localized electrons

Details Nonequilibrium orbital magnetization of strongly localized electrons Nonequilibrium orbital magnetization of strongly localized electrons

1996-05-03

arxiv.org/abs/cond-mat/9605017v1

Physics

Condensed Matter

RevTeX 3.0

Scientific paper

10.1103/PhysRevB.54.9346

The magnetic response of strongly localized electrons to a time-dependent vector potential is considered. The orbital magnetic moment of the system, away from steady-state conditions, is obtained. The expression involves the tunneling and phonon-assisted hopping currents between localized states. The frequency and temperature dependence of the orbital magnetization is analyzed as function of the admittances connecting localized levels. It is shown that quantum interference of the localized wave functions contributes to the moment a term which follows adiabatically the time-dependent perturbation.

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