Journal of Superconductivity

, Volume 1, Issue 3, pp 231–294

Specific heat of the high-Tc oxide superconductors

  • R. A. Fisher
  • J. E. Gordon
  • N. E. Phillips
Review

DOI: 10.1007/BF00617717

Cite this article as:
Fisher, R.A., Gordon, J.E. & Phillips, N.E. J Supercond (1988) 1: 231. doi:10.1007/BF00617717

Abstract

We review the specific heat measurements on La2CuO4, La2−xMxCuO4 (M = Ca, Sr, and Ba), YBa2Cu3O7, and the Bi-Ca-Sr-Cu-O and Tl-Ca-Ba-Cu-O systems. Tables of properties derived from the data are presented. Results on RBa2Cu3O7 (R=rare earth elements other than Y) are summarized, as are results on YBa2(Cu3−xMx)O7 (M=Zn, Cr, Fe, or Ni). The difficulties of analyzing the specific heat data, and specifically the separation of the contributions associated with magnetic impurities, are discussed. It is tentatively concluded that the data nearTc are consistent with BCS theory, although they show evidence of fluctuation effects. It is also concluded that the low-temperature zero-field data on a majority of the high-Tc oxide superconductors provide evidence of anintrinsic term that is proportional toT, a result that is inconsistent with a gap in the electronic density of states.

Key words

high-Tc superconductivityspecific heat

Copyright information

© Plenum Publishing Corporation 1988

Authors and Affiliations

  • R. A. Fisher
    • 1
  • J. E. Gordon
    • 1
  • N. E. Phillips
    • 1
  1. 1.Materials and Chemical Sciences Division, Lawrence Berkeley LaboratoryUniversity of CaliforniaBerkeley
  2. 2.Physics DepartmentAmherst CollegeAmherst