On the influence of soft crystal field excitations on the spectrum of spin excitations in CeNiSn-type Kondo lattices

Yu Kagan, K. A. Kikoin, A. S. Mishchenko

Research output: Contribution to journalArticlepeer-review

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Abstract

On the grounds of the microscopic theory of heavy-fermion spin liquids a novel description of low-energy excitation spectra in CeNiSn and related compounds is offered. The anomalous properties of orthorhombic CeNiSn and related materials are explained by the interplay between the fermi-type spinon excitations with the energy scale T * ≈ TK and the one-site crystal field excitations with the energy ΔCF < T*. The theory gives both quantitative and qualitative description of inelastic neutron scattering spectra and low-temperature thermodynamics. It resolves also the apparent contradiction between metallic conductivity and gap-wise behavior of thermodynamic properties and spin response at low temperatures.

Original languageEnglish
Pages (from-to)680-682
Number of pages3
JournalPhysica B: Condensed Matter
Volume230-232
DOIs
StatePublished - 1 Jan 1997
Externally publishedYes

Keywords

  • CeNiSn
  • Kondo compounds
  • Neutron scattering
  • Spin liquid

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