Thermodynamics of the anisotropic two-channel Kondo problem

Gergely Zaránd, Theo Costi, Andres Jerez, Natan Andrei

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

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 (US)
Pages (from-to)1-9
Number of pages9
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number13
DOIs
StatePublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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