Anisotropy of the thermal conductivity of YBa2Cu3O7-y

S. J. Hagen, Z. Z. Wang, N. P. Ong

Research output: Contribution to journalArticlepeer-review

191 Scopus citations


The thermal conductivity, both in-plane (ab) and out-of-plane (c), has been measured in 90-K crystals of YBa2Cu3O7-y from 10 to 330 K. ab displays an 18 to 40% increase below the transition temperature Tc (as in ceramic data). c, however, is four to five times smaller and shows no anomaly at Tc. Comparing these results to ab of insulating crystals, we find evidence for very strong but highly anisotropic electron-phonon coupling in the normal state. Our results are consistent with a phonon origin for the peak in ab.. AE

Original languageEnglish (US)
Pages (from-to)9389-9392
Number of pages4
JournalPhysical Review B
Issue number13
StatePublished - 1989

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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