Naslov
Theory of the thermoelectricity of intermetallic compounds with Ce, Eu or Yb ions

Autori
Zlatić, Veljko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Virtual proceedings of the 3rd Hvar meeting on Concepts in Electron Correlation and the 1st Hvar Workshop on Correlated Thermoelectrics / Zlatić, V. - Zagreb : Institut za fiziku, 2005

Skup
1st Hvar Workshop on Correlated Thermoelectrics

Mjesto i datum
Hvar, Hrvatska, 25.09.2005. - 30.09.2005

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
thermopower and entropy of correlated systems

Sažetak
The thermoelectric properties of intermetallic compounds with Ce or Yb ions are explained by the single-impurity Anderson model which takes into account the internal structure of the 4f states. The calculated thermopower exhibits all the characteristic features observed in Ce, Eu, and Yb intermetallics[1]. Assuming that pressure changes the effective coupling, we calculate various characteristic energy scales of the model and obtain the (T, p) phase diagram which agrees with the experimental data on CeRu2Si2, CeCu2Si2, CePd2Si2, and similar compounds. The chemical pressure effects in EuCu2(Ge1 ?x Six)2 are discussed as well. The evolution of the thermopower as a function of temperature, pressure or doping is related to the crossovers between various fixed points of the model. The seemingly complicated shape of S(T) is explained in terms of the redistribution of the single-particle spectral weight within the Fermi window.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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