Thermodynamic transitions in inhomogeneous cuprate superconductors

J. W. Loram; J. L. Tallon

Thermodynamic transitions in inhomogeneous cuprate superconductors

Superconductivity 2007-05-23 v1

Authors: J. W. Loram , J. L. Tallon

Abstract

Scanning tunneling spectroscopy studies on Bi $_2$ Sr $_2$ CaCu $_2$ O $_{8+\delta}$ suggest the presence of electronic inhomogeneity with a large spatial variation in gap size. Andersen {\it et al} have modelled this variation by assuming a spatially-varying pairing interaction. We show that their calculated specific heat is incompatible with the experimental data which exhibit narrow transitions. This calls into question the now-common assumption of gap and pairing inhomogeneity.

Keywords

cuprate superconductors electronic inhomogeneity specific heat pairing interaction scanning tunneling spectroscopy thermodynamic transitions

Cite

@article{arxiv.cond-mat/0609305,
  title  = {Thermodynamic transitions in inhomogeneous cuprate superconductors},
  author = {J. W. Loram and J. L. Tallon},
  journal= {arXiv preprint arXiv:cond-mat/0609305},
  year   = {2007}
}

Comments

4 pages, 6 figures, submitted to Phys. Rev. B

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