Density of states and the energy gap in superconducting cuprates

S. D. Adrian; S. A. Wolf; O. Dolgov; S. Shulga; V. Z. Kresin

doi:10.1103/PhysRevB.56.7878

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Density of states and the energy gap in superconducting cuprates

S. D. Adrian, S. A. Wolf, O. Dolgov, S. Shulga, V. Z. Kresin

DOI 10.1103/PhysRevB.56.7878 · Physical Review B

T1

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Abstract

The superconducting density of states for the cuprates, particularly for the Y-Ba-Cu-O compound, has been evaluated, and its dependence on temperature and the oxygen content has been analyzed. The analysis is based on the two-gap model. Moreover, the magnetic scattering and corresponding pair-breaking effect, correlated with the oxygen depletion, is taken into account as a key factor. The temperature dependencies of the energy gaps are calculated. Intensive magnetic scattering leads to gaplessness. The calculation allows us to describe various experimental data.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nd1.85Ce0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown