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Regular version of the site

Article

Effect of phonon induced spin- flip processes on correlated quantum dot kinetics

Maslova N., Arseyev P., Mantsevich V.

We present a theoretical analysis of relaxation processes in a correlated quantum dot (QD) coupled to a reservoir
in the presence of electron-phonon interaction. The eff ect of both electron-phonon interaction and Coulomb
correlations on system's kinetics is analyzed by means of equations of motion for generalized non-equilibrium
Green's functions. It is shown that phonon-assisted tunneling enhances the relaxation processes in a correlated
quantum dot. Moreover, electron-phonon interaction changes stationary values and typical relaxation rates of
the second-order correlation functions for localized electrons. In spite of the fact that electron-phonon interaction is spin independent, it strongly influences spin correlations in the presence of Coulomb interactions
between localized electrons. This effect appears to be due to phonon-induced spin- flip processes of localized
electrons