Breakdown of Universal Transport in Correlated d-Wave Superconductors

Brian M. Andersen; P. J. Hirschfeld

doi:10.1103/PhysRevLett.100.257003

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Breakdown of Universal Transport in Correlated d-Wave Superconductors

Brian M. Andersen, P. J. Hirschfeld

DOI 10.1103/PhysRevLett.100.257003 · Physical Review Letters

T1

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Abstract

The prediction and observation of low-temperature universal thermal conductivity in cuprates has served as a keystone of theoretical approaches to the superconducting state, but recent measurements on underdoped samples show strong violations of this apparently fundamental property of d-wave nodal quasiparticles. Here, we show that the breakdown of universality may be understood as the consequence of disorder-induced magnetic droplets arising from enhanced antiferromagnetic correlations in the underdoped state, even as these same correlations protect the nodal density of states.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown