Thermodynamics of the anisotropic two-channel Kondo problem

G. Zaránd, Theo Costi, Andres Jerez, Natan Andrei

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We construct and solve numerically the thermodynamic Bethe-ansatz equations for the spin-anisotropic two-channel Kondo model in arbitrary external field h. At high temperatures the specific heat and the susceptibility show power-law dependence. For (formula presented) and at temperatures below the Kondo temperature (formula presented) a two-channel Kondo effect develops characterized by a Wilson ratio (formula presented) and a logarithmic divergence of the susceptibility and the linear specific-heat coefficient. A finite magnetic field, (formula presented) drives the system to a Fermi-liquid fixed point with an unusual Wilson ratio which depends sensitively on h.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number13
DOIs
Publication statusPublished - Jan 1 2002

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Thermodynamics
thermodynamics
Specific heat
Kondo effect
Fermi liquids
specific heat
magnetic permeability
Temperature
Magnetic fields
divergence
temperature
coefficients
magnetic fields

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Thermodynamics of the anisotropic two-channel Kondo problem. / Zaránd, G.; Costi, Theo; Jerez, Andres; Andrei, Natan.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 13, 01.01.2002, p. 1-9.

Research output: Contribution to journalArticle

Zaránd, G. ; Costi, Theo ; Jerez, Andres ; Andrei, Natan. / Thermodynamics of the anisotropic two-channel Kondo problem. In: Physical Review B - Condensed Matter and Materials Physics. 2002 ; Vol. 65, No. 13. pp. 1-9.
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