Structural chemistry and high-temperature superconductivity

J. C. Phillips

doi:10.1103/PhysRevB.36.861

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Structural chemistry and high-temperature superconductivity

J. C. Phillips

DOI 10.1103/PhysRevB.36.861 · Physical Review B

T1

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Abstract

Phenomenological trends in the superconducting transition temperature Tc and the energy gap Eg as measured in many tunneling and isotope experiments are discussed for ternary metallic Cu oxides. Available data are consistent with the Bardeen-Frölich electron-phonon mechanism and the Bardeen-Cooper-Schrieffer microscopic theory. The role of Cu oxidation is discussed in the context of the mechanical stability of the perovskitelike lattice structure.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Ba2YCu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	93	Pressure not reported	unknown
Ba(Pb,Bi)O3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
(La,Sr)2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
(La,Ba)2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Y0.4B0.6CuO3-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	50	Pressure not reported	unknown