Thermodynamic transitions in inhomogeneous d-wave superconductors

Brian M. Andersen; Ashot Melikyan; Tamara S. Nunner; P. J. Hirschfeld

doi:10.1103/PhysRevB.74.060501

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Thermodynamic transitions in inhomogeneous d-wave superconductors

Brian M. Andersen, Ashot Melikyan, Tamara S. Nunner, P. J. Hirschfeld

DOI 10.1103/PhysRevB.74.060501 · Physical Review B

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Abstract

We study the spectral and thermodynamic properties of inhomogeneous d-wave superconductors within a model where the inhomogeneity originates from atomic-scale pair disorder. This assumption has been shown to be consistent with the small charge and large gap modulations observed by scanning tunneling spectroscopy on Bi2Sr2CaCu2O8+x. Here we calculate the specific heat within the same model, and show that it gives a transition width comparable to those found in experiments on this material. This suggests that nanoscale inhomogeneity is a bulk property of the Bi2Sr2CaCu2O8+x materials.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown