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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arXiv · 0711.2294

Breakdown of universal transport in correlated d-wave superconductors

Brian M. Andersen·P. J. Hirschfeld

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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 states in the presence of increasing antiferromagnetic correlations in the underdoped state, even as these same correlations protect the nodal low-energy density of states in agreement with recent scanning tunneling experiments.

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Brian M. Andersen, P. J. Hirschfeld. 2007-12-13. Breakdown of universal transport in correlated d-wave superconductors. https://doi.org/10.1103/physrevlett.100.257003

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