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Thermoelectric transport near pair breaking quantum phase transition out of d-wave superconductivity

Daniel Podolsky·Ashvin Vishwanath·Joel Moore·Subir Sachdev
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Abstract

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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Daniel Podolsky, Ashvin Vishwanath, Joel Moore, Subir Sachdev. 2007-01-17. Thermoelectric transport near pair breaking quantum phase transition out of d-wave superconductivity. https://doi.org/10.1103/physrevb.75.014520

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