Dresden 2006 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 25: Correlated Electrons - Poster Session

TT 25.68: Poster

Mittwoch, 29. März 2006, 14:30–18:30, P1

Phase Diagram of the Non-Equilibrium Anisotropic Kondo Model — •Peter Fritsch and Stefan Kehrein — LMU München, Department für Physik

Using the method of infinitesimal unitary transformation (flow equations), we derive a perturbative scaling picture of the anisotropic Kondo Model in a non-equilibrium state due to an applied dc-voltage bias. The scaling picture generically contains both the equilibrium and the non-equilibrium physics of the model, thereby allowing us to study the effect of decoherence on the Kosterlitz-Thouless quantum phase transition found in the equilibrium model.

This work is a generalization of the previous flow equation analysis of the isotropic non-equilibrium Kondo Model [1].

[1] S. Kehrein, Phys. Rev. Lett. 95, 056602 (2005)