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The Thermoelectric power of Kondo Cerium and Ytterbium compounds, (CROSBI ID 103788)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Zlatić, Veljko ; Milat, Igor ; Coqblin, Bernard ; Czycholl, Gerd The Thermoelectric power of Kondo Cerium and Ytterbium compounds, // Physica. B, Condensed matter, 312 (2002), 171-173-x

Podaci o odgovornosti

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

engleski

The Thermoelectric power of Kondo Cerium and Ytterbium compounds,

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.

Thermoelectricity; Kondo effect; crystal field; Ytterbium; Cerium

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Podaci o izdanju

312

2002.

171-173-x

objavljeno

0921-4526

Povezanost rada

Fizika

Indeksiranost