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arXiv · 0903.2865

Non-Equilibrium Kondo Model with Voltage Bias in a Magnetic Field

P. Fritsch·S. Kehrein
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Abstract

We derive a consistent 2-loop scaling picture for a Kondo dot in both equilibrium and non-equilibrium situations using the flow equation method. Our analysis incorporates the important decoherence effects from both thermal and non-equilibrium noise in a common setting. We calculate the spin-spin correlation function, the T-matrix, and the magnetization as functions of applied magnetic field, dc-voltage bias and temperature. In all these quantities we observe characteristic non-equilibrium features for a nonvanishing external voltage bias like Kondo splitting and strongly enhanced logarithmic corrections.

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P. Fritsch, S. Kehrein. 2009-03-16. Non-Equilibrium Kondo Model with Voltage Bias in a Magnetic Field. https://doi.org/10.1103/physrevb.81.035113

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