Non-Fermi-liquid behavior of impurity Anderson model with non-Kramers doublet ground state

Y. Shimizu, O. Sakai, S. Suzuki

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We investigate the non-Fermi-liquid (NFL) behaviour of an impurity Anderson model which has an f2 configuration subject to a tetragonal crystalline electric field (CEF), giving a ground state which is a non-Kramers doublet. The temperature dependence of the specific heat in a magnetic field is calculated. When the magnetic field is very weak, there are two peaks: one is a broad peak around 5T*, where T* is the temperature at which the - ln T dependence of the magnetic susceptibility and the γ-coefficient of the specific heat, associated with the NFL behaviour, begins. The other peak is at very low temperatures and shows a release of the residual entropy which is expected from the NFL state of a two-channel type Kondo model.

Original languageEnglish
Pages (from-to)366-367
Number of pages2
JournalPhysica B: Condensed Matter
Volume259-261
DOIs
Publication statusPublished - 1999 Jan 1

Keywords

  • Dilute uranium alloy
  • Non-Fermi-liquid
  • Numerical renormalization group
  • Specific heat

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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