Naslov
The Thermoelectric power of Kondo Cerium and Ytterbium compounds,

Autori
Zlatić, Veljko ; Milat, Igor ; Coqblin, Bernard ; Czycholl, Gerd

Izvornik
Physica C (0921-4526) 312 (2002); 171-173

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Thermoelectricity; Kondo effect; crystal field; Ytterbium; Cerium

Sažetak
The temperature dependence of the thermoelectric power (TEP) of Kondo Ce and Yb compounds is theoretically studied by a new approach: for $T\gg T_K$, we start from the Coqblin-Schrieffer Hamiltonian including the crystalline field effect and we use a renormalized perturbation expansion with the coupling constants calculated by the "poor man's scaling" method ; for $T\ll T_K$, we use an effective spin-1/2 periodic Anderson model (PAM). This treatment can give a negative peak at low temperatures and a positive one at high temperatures, in good agreement with the TEP curves of many Ce compounds.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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