Thermodynamic fluctuations in the 110-K Bi-Sr-Ca-Cu-O superconductor: Evidence for two-dimensional behavior

G. Balestrino; A. Nigro; R. Vaglio; M. Marinelli

doi:10.1103/PhysRevB.39.12264

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Thermodynamic fluctuations in the 110-K Bi-Sr-Ca-Cu-O superconductor: Evidence for two-dimensional behavior

G. Balestrino, A. Nigro, R. Vaglio, M. Marinelli

DOI 10.1103/PhysRevB.39.12264 · Physical Review B

T1

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Abstract

Measurements of the excess conductivity above the superconducting transition for the 110-K phase of the Bi-Sr-Ca-Cu-O compound are reported. The data are very well described in terms of the classic theory of thermodynamic fluctuations in a two-dimensional superconductor. The results are discussed and compared with previous observations on the YBa2Cu3O7 compound, where three-dimensional superconductivity was found.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2Ca2Cu3O10+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	108.8	Pressure not reported	midpoint
Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	85	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown