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arXiv · 1404.3770

The Kondo Temperature of SU(4) Symmetric Quantum Dots

Michele Filippone·Catalin Pascu Moca·Gergely Zarand·Christophe Mora
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Abstract

A path integral approach is used to derive a closed analytical expression for the Kondo temperature of the SU(4) symmetrical Anderson model. In contrast to the SU(2) case, the prefactor of the Kondo temperature is found to display a peculiar orbital energy (gate voltage) dependence, reflecting the presence of various SU(4) mixed valence fixed points. Our analytical expressions are tested against and confirmed by numerical renormalization group computations.

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Michele Filippone, Catalin Pascu Moca, Gergely Zarand, Christophe Mora. 2014-04-14. The Kondo Temperature of SU(4) Symmetric Quantum Dots. https://doi.org/10.1103/physrevb.90.121406

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