Thermoelectric power of Kondo insulators
| Autor: | Tetsuro Saso, Kentaro Urasaki |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: |
Condensed matter physics
business.industry Chemistry Kondo insulator General Chemistry Condensed Matter Physics Condensed Matter::Materials Science Semiconductor Self-energy Mean field theory Seebeck coefficient Thermoelectric effect A. Semiconductors D. Transport properties General Materials Science Condensed Matter::Strongly Correlated Electrons Kondo effect business Anderson impurity model |
| Zdroj: | Journal of physics and chemistry of solids. 63(6-8):1475-1478 |
| ISSN: | 0022-3697 |
| Popis: | Thermoelectric power (TEP) of the Kondo insulators is investigated theoretically within the framework of the dynamical mean field theory. It is found that the temperature dependence of the Seebeck coefficient changes from the ordinary behavior S ( T )∝ T −1 in semiconductors to S ∝ T at low temperatures due to the finite imaginary part of the electron self-energy in the Kondo insulators with strong correlation. Realistic models for YbB 12 and FeSi based on the band calculations are also studied. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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