c-Axis transport in a normal-state bilayer cuprate and relation to pseudogap

W. C. Wu, W. A. Atkinson, J. P. Carbotte

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We study the effect of interband transitions on the normal-state optical conductivity, dc resistivity, and thermal conductivity along the c-axis, for a plane-chain bilayer cuprate coupled by a perpendicular hopping matrix element (t). When t is small, the c-axis dc resistivity shows a characteristic upturn as the temperature is lowered, and the c-axis optical conductivity develops a pseudogap at low frequencies. As t is increased, intraband transitions start to dominate and a more conventional response is obtained. Similar pseudogap behavior is predicted in the thermal conductivity for which strong depression at low temperature is found. Analytical results for a simple plane-plane bilayer are also given, including the frequency sum rule of the optical conductivity.

Original languageEnglish
Pages (from-to)305-315
Number of pages11
JournalJournal of Superconductivity
Volume11
Issue number2
DOIs
Publication statusPublished - 1998 Jan 1

Keywords

  • High-T superconductors
  • Transports
  • c-axis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

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