Effect of coexisting order of various form and wave vector on low-temperature thermal conductivity in d-wave superconductors
arXiv:0908.3168 · doi:10.1103/PhysRevB.81.054504
Abstract
In light of recent experimental evidence of density wave order in the cuprates, we consider a phenomenological model of a d-wave superconductor with coexisting charge, spin or pair density wave order of various form and wave vector. We study the evolution of the nodal structure of the quasiparticle energy spectrum as a function of the amplitude of the coexisting order and perform diagrammatic linear response calculations of the low-temperature (universal-limit) thermal conductivity. The work described herein expands upon our past studies, which focused on a particular unit-cell-doubling charge density wave, generalizing our techniques to a wider class of coexisting order. We find that the question of whether the nodes of the d-wave superconductor survive amidst a reasonable level of coexisting order is sensitive to the form and wave vector of the order. However, in cases where the nodes do become gapped, we identify a signature of the approach to this nodal transition, in the low-temperature thermal conductivity, that appears to be quite general. The amplitude of this signature is found to be disorder-dependent, which suggests a connection between the presence of coexisting order in the underdoped cuprates and recent observations of deviations from universal (disorder-independent) thermal conductivity in the underdoped regime.
11 pages, 10 figures
References in corpus (11)
- Scanning tunneling spectroscopy of high-temperature superconductors
- A `checkerboard' electronic crystal state in lightly hole-doped Ca_{2-x}Na_{x}CuO_{2}Cl_{2}
- An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates
- Charge density wave origin of cuprate checkerboard visualized by scanning tunneling microscopy
- How Cooper pairs vanish approaching the Mott insulator in Bi2Sr2CaCu2O8+d
- Electronic Origin of the Inhomogeneous Pairing Interaction in the High-Tc Superconductor Bi2Sr2CaCu2O8+d
- Imaging the impact on cuprate superconductivity of varying the inter-atomic distances within individual crystal unit-cells
- Stability of nodal quasi-particles in superconductors with coexisting orders
- Breakdown of universal transport in correlated d-wave superconductors
- Doping dependence of phonon and quasiparticle heat transport of pure and Dy-doped Bi_2Sr_2CaCu_2O_{8+δ} single crystals
- Low temperature quasiparticle transport in a d-wave superconductor with coexisting charge order