Specific heat of single crystals of YBa2Cu3O7-: Fluctuation effects in a bulk superconductor

S. E. Inderhees, M. B. Salamon, Nigel D Goldenfeld, J. P. Rice, B. G. Pazol, D. M. Ginsberg, J. Z. Liu, G. W. Crabtree

Research output: Contribution to journalArticlepeer-review

Abstract

Gaussian fluctuations have been observed in the specific heat of two single crystals YBa2Cu3O7. Deviations from a BCS-type step are well accounted for by 3D Gaussian fluctuations whose amplitude ratio, in the cleaner sample, implies that the number of order-parameter components is 7. This result is inconsistent with an O(2) Ginzburg-Landau theory.

Original languageEnglish (US)
Pages (from-to)1178-1180
Number of pages3
JournalPhysical review letters
Volume60
Issue number12
DOIs
StatePublished - 1988

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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