Spin-fluctuation drag thermopower of nearly ferromagnetic metals

We investigate theoretically the Seebeck effect in materials close to a ferromagnetic quantum critical point to explain anomalous behaviour at low temperatures. It is found that the main effect of spin fluctuations is to enhance the coefficient of the leading T-linear term, and a quantum critical be...

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Veröffentlicht in:Journal of physics. Condensed matter 2010-03, Vol.22 (11), p.115604-115604
1. Verfasser: Okabe, Takuya
Format: Artikel
Sprache:eng
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Zusammenfassung:We investigate theoretically the Seebeck effect in materials close to a ferromagnetic quantum critical point to explain anomalous behaviour at low temperatures. It is found that the main effect of spin fluctuations is to enhance the coefficient of the leading T-linear term, and a quantum critical behaviour characterized by a spin-fluctuation temperature appears in the temperature dependence of the correction terms as in the specific heat.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/22/11/115604