Perturbative renormalization of multi-channel Kondo-type models

Y. Kuramoto

doi:10.1007/s100510050466

Perturbative renormalization of multi-channel Kondo-type models

Y. Kuramoto

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The poor man's scaling is extended to higher order by the use of the open-shell Rayleigh-Schrödinger perturbation theory. A generalized Kondo-type model with the SU(n) × SU(m) symmetry is proposed and renormalized to the third order. It is shown that the model has both local Fermi-liquid and non-Fermi-liquid fixed points, and that the latter becomes unstable in the special case of n = m = 2. Possible relevance of the model to the newly found phase IV in Ce_xLa_1-xB₆ is discussed.

Original language	English
Pages (from-to)	457-464
Number of pages	8
Journal	European Physical Journal B
Volume	5
Issue number	3
DOIs	https://doi.org/10.1007/s100510050466
Publication status	Published - 1998
Externally published	Yes

Keywords

05.30.-d quantum statistical mechanics
05.70.Jk Critical point phenomena

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1007/s100510050466

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AB - The poor man's scaling is extended to higher order by the use of the open-shell Rayleigh-Schrödinger perturbation theory. A generalized Kondo-type model with the SU(n) × SU(m) symmetry is proposed and renormalized to the third order. It is shown that the model has both local Fermi-liquid and non-Fermi-liquid fixed points, and that the latter becomes unstable in the special case of n = m = 2. Possible relevance of the model to the newly found phase IV in CexLa1-xB6 is discussed.

KW - 05.30.-d quantum statistical mechanics

KW - 05.70.Jk Critical point phenomena

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JO - Zeitschrift für Physik B Condensed Matter and Quanta

JF - Zeitschrift für Physik B Condensed Matter and Quanta

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ER -

Perturbative renormalization of multi-channel Kondo-type models

Abstract

Keywords

ASJC Scopus subject areas

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