Multipolar Kondo effect in orbitally degenerate f-electron systems

H. Kusunose, Y. Kuramoto

Research output: Contribution to journalConference articlepeer-review

Abstract

Entanglement of spin and orbital Kondo effect is investigated on the basis of a Kondo-type exchange model with an orbital degeneracy. In the presence of particle-hole symmetry, we show that the model has a new non-Fermi-liquid fixed point with a fractional entropy. The spectral intensity of the quadrupole susceptibility diverges in the zero-frequency limit, while the dipole susceptibility shows a Fermi-liquid-like behavior. Even for a fairly particle-hole asymmetric case with the Fermi-liquid ground state, the non-Fermi-liquid behavior has significant influences on electric and thermal properties.

Original languageEnglish
Pages (from-to)544-545
Number of pages2
JournalPhysica B: Condensed Matter
Volume281-282
DOIs
Publication statusPublished - 2000 Jun 1
EventYamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn
Duration: 1999 Aug 241999 Aug 28

ASJC Scopus subject areas

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

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