Heat capacity and upper critical field for inhomogeneous superconductors: Application to overdoped cuprates
L. D. Landau Institute for Theoretical Physics, Russian Academy
of Sciences Moscow, Russia
2 Lawrence Berkeley Laboratory, University of California - Berkeley, CA 94720, USA
Accepted: 15 April 1999
The presence of inhomogeneities has a great impact on the behavior of the heat capacity, particularly near the critical temperature. An expression for is derived for this case, and is used to calculate the temperature dependence of the upper critical field. The analysis is in good agreement with the experimental data for overdoped cuprates.
PACS: 74.80.-g – Spatially inhomogeneous structures / 74.72.-h – High-Tc compounds / 74.62.Dh – Effects of crystal defects, doping and substitution
© EDP Sciences, 1999