ar X iv : c on d - m at / 0 51 05 97 v 2 17 J an 2 00 7 Thermoelectric transport near the pair breaking quantum phase transition out of a d - wave superconductor
نویسندگان
چکیده
We study electric, thermal, and thermoelectric conductivities in the vicinity of a z = 2 superconductor-diffusive metal transition in two dimensions, both in the high and low frequency limits. We find violation of the Wiedemann-Franz law and a dc thermoelectric conductivity α that does not vanish at low temperatures, in contrast to Fermi liquids. We introduce a Langevin equation formalism to study critical dynamics over a broad region surrounding the quantum critical point.
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