Unusual field dependence of thermal conductivity in La2-xSrxCuO4: Suppression of quasi-particle coherence

N. P. Ong, K. Krishana, T. Kimura

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The anomaly in the thermal conductivity κ of La2-xSrxCuO4 is very sensitive to field B. Below 14 Tesla, it is quite well described by Y(x) = ψ(1/2 + 1/2) + 1n(x) where ψ(x) is the digamma function. The experiment suggests that the field suppression is a quantum decoherence effect involving quasi-particles diffusing in the disordered CuO2 plane. Understanding how B affects qp diffusion may provide a sensitive probe of coherence effects using the heat current.

Original languageEnglish (US)
Pages (from-to)244-247
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume282-287
Issue numberPART 1
DOIs
StatePublished - Aug 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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