Scaling behavior in the Ce-based Kondo semiconductors: NQR/NMR measurements of CeRhSb and CeNiSn under high pressures
Abstract
The validity of scaling has been straightforwardly investigated in CeRhSb and CeNiSn through the high-pressure studies on the nuclear spin-lattice relaxation rate T-11. A universal curve with a characteristic temperature in (T1T)-1, independent of the applied pressures about 1 GPa, is observed over a broad temperature range including the formation of a magnetic excitation gap. This implies that the gap is given by a characteristic temperature, closely related with the Kondo effect. The universal feature is also verified by the Grüneisen parameters obtained from the thermodynamic and transport properties.
- Publication:
-
Physical Review B
- Pub Date:
- December 1999
- DOI:
- 10.1103/PhysRevB.60.14537
- Bibcode:
- 1999PhRvB..6014537I
- Keywords:
-
- 75.20.Hr;
- 76.60.-k;
- 75.30.Mb;
- Local moment in compounds and alloys;
- Kondo effect valence fluctuations heavy fermions;
- Nuclear magnetic resonance and relaxation;
- Valence fluctuation Kondo lattice and heavy-fermion phenomena