Electron-Phonon Coupling in the Heavy-Fermion Compound CeCu 6
1987; Institute of Physics; Volume: 3; Issue: 7 Linguagem: Inglês
10.1209/0295-5075/3/7/009
ISSN1286-4854
AutoresDaniel Weber, M. Yoshizawa, I. Kouroudis, B. Lüthi, E. Wałker,
Tópico(s)Iron-based superconductors research
ResumoFrom the temperature dependence of the elastic constants in CeCu6 magnetoelastic and Grüneisen parameter effects are identified. A quantitative interpretation of the magnetoelastic effects determines the parameters of the crystal field Hamiltonian, which account also for the single-ion magnetic susceptibility and the Schottky specific heat. The longitudinal c11 and c33-modes show additional softening at low temperatures. From this we deduce a Grüneisen parameter Ω ∼ 80. A new magnetoacoustic effect is also presented.
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