Abstract
The anomalies in the low-temperature thermodynamics (heat capacity, thermal expansion) of Kondo-materials CeNiSn and CeRhSb are explained in a framework of the theory of spin liquid in a Kondo lattice which was used previously for quantitative description of inelastic magnetic neutron scattering spectra (2.5meV and 4meV excitations). These anomalies are explained by the interplay between the heavy fermions and the crystal field excitations in assumption that the crystal-field splitting δCF is less than Kondo temperature Tk. It is shown that the V-shape pseudogap appears in a spin excitation branch but the charge excitations remain gapless. The spin excitation spectrum for an orthorhombic lattice turns out to be highly anisotropic.
Original language | English |
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Pages (from-to) | 1899-1900 |
Number of pages | 2 |
Journal | Czechoslovak Journal of Physics |
Volume | 46 |
Issue number | SUPPL. 4 |
DOIs | |
State | Published - 1 Dec 1996 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy