Breakdown of universal transport in correlated d-wave superconductors
arXiv:0711.2294 · doi:10.1103/PhysRevLett.100.257003
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.
5 pages, 2 figures
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- From immunity to sudden death: Effects of strong disorder in strongly correlated superconductors
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- Effective pairing theory for strongly correlated d-wave superconductors
- Effects of Strong Correlations and Disorder in d-Wave Superconductors
- Low temperature quasiparticle transport in a d-wave superconductor with coexisting charge order
- Magnetic field-induced soft mode in spin-gapped high-Tc superconductors
- Extinction of impurity resonances in large-gap regions of inhomogeneous d-wave superconductors
- Influence of impurities on electronic structure in cuprate superconductors