# Low-Temperature Quasiparticle Transport in a D-Wave Superconductor with Coexisting Charge Order

 Title: Low-Temperature Quasiparticle Transport in a D-Wave Superconductor with Coexisting Charge Order Author: Durst, Adam; Sachdev, Subir Note: Order does not necessarily reflect citation order of authors. Citation: Durst, Adam, and Subir Sachdev. 2009. Low temperature quasiparticle transport in a d-wave superconductor with coexisting charge order. Physical Review B 80(5): 054518. Full Text & Related Files: 0810.3914v1.pdf (364.8Kb; PDF) Abstract: In light of the evidence that charge order coexists with $$d$$-wave superconductivity in the underdoped cuprate superconductors, we investigate the manner in which such charge order will influence the quasiparticle excitations of the system and, in particular, the low-temperature transport of heat by those quasiparticles. We consider a d-wave superconductor in which the superconductivity coexists with charge density wave order of wave vector $$(\pi/a,0)$$. While the nodes of the quasiparticle energy spectrum survive the onset of charge order, there exists a critical value of the charge density wave order parameter beyond which the quasiparticle spectrum becomes fully gapped. We perform a linear response Kubo formula calculation of thermal conductivity in the low temperature (universal) limit. Results reveal the dependence of thermal transport on increasing charge order up to the critical value at which the quasiparticle spectrum becomes fully gapped and thermal conductivity vanishes. In addition to numerical results, closed-form expressions are obtained in the clean limit for the special case of isotropic Dirac nodes. Signatures of the influence of charge order on low-temperature thermal transport are identified. Published Version: doi://10.1103/PhysRevB.80.054518 Other Sources: http://arxiv.org/abs/0810.3914v1 Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:7473201 Downloads of this work: