Thermal transport in the cuprates: Changes with doping across the phase diagram

Research output: Contribution to journalConference articlepeer-review

Abstract

An overview of recent developments in the understanding of thermal conduction in the cuprates is presented. Anomalous phonon damping underlies an unusual temperature dependence of the in-plane thermal conductivity for the insulating phase of some materials. This damping is sensitive to light oxygen doping in YBa2Cu3O6+x (YBCO), is possibly related to local structural distortions, and may persist in superconducting compositions. New systematics for the superconducting-state enhancement of Kab are discussed. For YBCO the oxygen-doping dependence of the enhancement correlates with that of the pari density as determined by specific heat jumps. The large enhancements observed for fully-oxygenated specimens are attributed to pair condensation on the CuO chains. The implications of this finding and its possible connection with the emergence of the normal-state pseudogap are examined.

Original languageEnglish (US)
Pages (from-to)18-27
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2697
DOIs
StatePublished - Dec 1 1996
EventOxide Superconductor Physics and Nano-Engineering II - San Jose, CA, United States
Duration: Jan 30 1996Jan 30 1996

Keywords

  • Carrier doping
  • Cuprates
  • Heat conductivity
  • Phonon scattering
  • Pseudogap
  • Structural phase transition
  • Superconducting pair density
  • Wiedemann-Franz Law

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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