Quantum Critical Fluctuations in Disordered-Wave Superconductors
- 12 March 2003
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 90 (10) , 107001
- https://doi.org/10.1103/physrevlett.90.107001
Abstract
To explain the strong quasiparticle damping in the cuprates, Sachdev and collaborators proposed to couple the system to a critically fluctuating id(xy)- or is-order parameter mode. Here we generalize the approach to the presence of static disorder. In the id case, the order parameter dynamics becomes diffusive, but otherwise much of the phenomenology of the clean case remains intact. In contrast, the interplay of disorder and is-order parameter fluctuations leads to a secondary superconductor transition, with a critical temperature exponentially sensitive to the impurity concentration.Keywords
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This publication has 13 references indexed in Scilit:
- Theories of low-energy quasi-particle states in disordered d-wave superconductorsPhysics Reports, 2002
- Quasiparticle Conductivities in Disordered-Wave SuperconductorsPhysical Review Letters, 2002
- Interacting Random Dirac Fermions in Superconducting CupratesPhysical Review Letters, 2001
- Incipient Nodal Pairing in Planar-wave SuperconductorsPhysical Review Letters, 2001
- Competing orders and quantum criticality in doped antiferromagnetsPhysical Review B, 2000
- Superconducting “metals” and “insulators”Physical Review B, 2000
- Evidence for Quantum Critical Behavior in the Optimally Doped Cuprate Bi 2 Sr 2 CaCu 2 O 8+δScience, 1999
- Superconducting quasiparticle lifetimes due to spin-fluctuation scatteringPhysical Review B, 1994
- Localized states in ad-wave superconductorPhysical Review Letters, 1993
- Effect of Zn impurities on the normal-state Hall angle in single-crystal YBa_{2}Cu_{3-x}Zn_{x}O_{7-δ}Physical Review Letters, 1991