Abstract
We analyze the temperature dependence of the specific heat and the quadrupole susceptibility for CePd2Al3, in which the Kondo effect coexists with the crystalline electric field (CEF) excitation. The calculation is carried out systematically by using the numerical renormalization group method. The ratio Δ/TK0 (Δ: the CEF excitation energy, TK0: the Kondo temperature for the fictitious system of Δ = 0) is estimated to be about 1.2 from the data of magnetic specific heat. The observed softening of C33 mode at very low temperature, which is expected to vanish in hexagonal compound such as CePd2Al3 from the conventional CEF theory, is explained by considering the Kondo effect.
Original language | English |
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Pages (from-to) | 2632-2639 |
Number of pages | 8 |
Journal | journal of the physical society of japan |
Volume | 65 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1996 |
Keywords
- Crystalline electric field
- Impurity anderson model
- Kondo effect
- Numerical renormalization group
- Quadrupole response
- Specific heat
ASJC Scopus subject areas
- Physics and Astronomy(all)