Thermodynamic fluctuations in the high-Tc perovskite superconductors

Aharon Kapitulnik; M. R. Beasley; C. Castellani; C. Di Castro

doi:10.1103/PhysRevB.37.537

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Thermodynamic fluctuations in the high-Tc perovskite superconductors

Aharon Kapitulnik, M. R. Beasley, C. Castellani, C. Di Castro

DOI 10.1103/PhysRevB.37.537 · Physical Review B

T1

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Abstract

The role of fluctuations in the breakdown of mean-field theory in the new high-Tc perovskite superconductors is analyzed. Both the breakdown of the classical critical exponents (the Ginzburg criterion) and the quantitative breakdown of mean-field theory (the Brout criterion) are discussed. It is found that for certain sets of observed parameters for these materials, a breakdown of mean-field theory is to be expected.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown