Spin-fluctuation drag thermopower of nearly ferromagnetic metals

J Phys Condens Matter. 2010 Mar 24;22(11):115604. doi: 10.1088/0953-8984/22/11/115604. Epub 2010 Mar 5.

Abstract

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.