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

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 $\alpha$ 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.

arXiv comment5 pages, 2 figures

References in corpus (7)

• Continuous Quantum Phase Transitions
• Non-zero temperature transport near quantum critical points
• Giant Nernst effect in a Kondo lattice close to a quantum critical point
• Delocalized fermions in underdoped cuprates
• Zero-temperature d-wave superconducting phase transition
• Quantum critical dynamics of the two-dimensional Bose gas
• Transport Properties near the z=2 Insulator-Superconductor Transition

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• Universal thermal and electrical transport near the superconductor-metal quantum phase transition in nanowires
• Low-Temperature Thermal Conductivity of CeRh${}_2$As${}_2$
• Theory of the pairbreaking superconductor-metal transition in nanowires
• Wiedemann-Franz law and non-vanishing temperature scale across the field-tuned quantum critical point of YbRh2Si2
• s-wave Cooper pair insulators and theory of correlated superconductors
• Optical phonon contribution to the thermal conductivity of a quantum paraelectric
• Transport anomalies in multiband superconductors near quantum critical point
• Flattening of Single-Particle Spectra in Strongly Correlated Electron Systems and the Violation of the Wiedemann-Franz Law
• Theory of Linear Magnetoresistance in a Strange Metal