Thermoelectric Power of Correlated Compounds View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2009

AUTHORS

N. Oeschler , S. Hartmann , U. Köhler , M. Deppe , P. Sun , F. Steglich

ABSTRACT

In the search for effective thermoelectric materials the class of strongly correlated electron systems has become one the main research topics for low-temperature Peltier cooling applications.In this paper we present results for a number of different compounds which exhibit strong correlations. The described heavy fermion metals have a particularly large thermopower S(T) below 30 K. The enhancement of the thermoelectric power is related to the large degeneracy of the ground-state f multiplet. The maximum in S(T) can be shifted by volume changes which cause a change of the hybridization. Some correlated semiconductors which have a huge thermoelectric power at low temperatures are also described. As an example, we consider FeSb2 which has a thermoelectric power exceeding −30,000μV/K at 10 K. Due to its semiconducting behavior, this material exhibits a record power factor PF = S2σ, where σ is the electrical conductivity. More... »

PAGES

81-90

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-90-481-2892-1_5

DOI

http://dx.doi.org/10.1007/978-90-481-2892-1_5

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1006497174


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