Symmetry of Hole States in Superconducting Oxides: Correlation with Tc

C. Di Castro; L. F. Feiner; M. Grilli

doi:10.1103/PhysRevLett.66.3209

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Symmetry of Hole States in Superconducting Oxides: Correlation with Tc

C. Di Castro, L. F. Feiner, M. Grilli

DOI 10.1103/PhysRevLett.66.3209 · Physical Review Letters

T1

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Abstract

Despite their small occupancy, the apical oxygen pz states have the indirect effect of modifying the relative occupancy of holes in states with different local symmetries in the CuO2 planes. A well-defined correlation is found between the maximum critical temperature Tcmax of various cuprates and the excess of holes in states with local a1 symmetry with respect to the doping δmax at which Tcmax is obtained for each compound. Implications for superconductivity models are discussed.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pb0.5Tl0.5Sr2CaCu2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	110	Pressure not reported	unknown
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	38	Pressure not reported	unknown
La2SrCu2O6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0	Pressure not reported	unknown
La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	38	Pressure not reported	unknown
La1.85Ba0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	30	Pressure not reported	unknown
(Ba0.67Eu0.33)2(Eu0.67Ce0.33)2Cu3O8.78 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	48	Pressure not reported	unknown
Y0.8Ca0.2Ba2Cu3O6.11 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	50	Pressure not reported	unknown
YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	60	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	93	Pressure not reported	unknown
TlBa2CaCu2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	100	Pressure not reported	unknown
Bi2Sr2Ca0.9Y0.1Cu2O8.24 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	93	Pressure not reported	unknown