Gap-anisotropic model for the narrow-gap Kondo insulators

Juana Moreno, Piers Coleman

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A theory is presented which accounts for the dynamical generation of a hybridization gap with nodes in the Kondo insulating materials CeNiSn and CeRhSb. By assuming that Coulomb interactions drive both charge and shape fluctuations of the Cerium f-state to high energies we are able to derive an effective three-channel Kondo lattice model. Interference amongst the different channels causes the hybridization to develop nodes and allows us to account for the formation of a nodal semi-metal.

Original languageEnglish (US)
Pages (from-to)190-192
Number of pages3
JournalPhysica B: Condensed Matter
Volume259-261
DOIs
StatePublished - Jan 1 1999

All Science Journal Classification (ASJC) codes

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

Keywords

  • Kondo insulators
  • Neutron scattering
  • Thermal conductivity

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