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

Research output: Contribution to journalConference article

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

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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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