Kondo temperature of SU(4) symmetric quantum dots

Michele Filippone, Cətəlin Paşcu Moca, G. Zaránd, Christophe Mora

Research output: Contribution to journalArticle

15 Citations (Scopus)

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.

Original languageEnglish
Article number121406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number12
DOIs
Publication statusPublished - Sep 25 2014

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Semiconductor quantum dots
quantum dots
valence
orbitals
Temperature
temperature
Electric potential
electric potential
energy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Kondo temperature of SU(4) symmetric quantum dots. / Filippone, Michele; Moca, Cətəlin Paşcu; Zaránd, G.; Mora, Christophe.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 12, 121406, 25.09.2014.

Research output: Contribution to journalArticle

Filippone, Michele ; Moca, Cətəlin Paşcu ; Zaránd, G. ; Mora, Christophe. / Kondo temperature of SU(4) symmetric quantum dots. In: Physical Review B - Condensed Matter and Materials Physics. 2014 ; Vol. 90, No. 12.
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