Tunneling evidence of strong cooper-pair-breaking near Tc in cuprate superconductors

E. L. Wolf; H. J. Tao; B. Susla

doi:10.1016/0038-1098(91)90732-B

Tunneling evidence of strong cooper-pair-breaking near T_c in cuprate superconductors

E. L. Wolf, H. J. Tao, B. Susla

Applied Physics

Research output: Contribution to journal › Article

Abstract

The superconductive tunneling density of states obtained from conventional metal film-insulator tunnel junctions on cleaved (ab) basal planes of single crystal Bi₂Sr₂CaCu₂O_8+y (2212) reveals a rising pair breaking rate Γ(T) near T_c, as predicted by Lee and Read. We obtain Γ(T)=2.3 kT_c(T/T_c)³, which confirms a recent calculation by Coffey and also recent tunneling results of Takada et al on YBa₂Cu₃O₆. This implies a pair lifetime at T_c of about 40 fs in 2212. The results indicate that the T³ pairbreaking near T_c is an intrinsic feature of superconductivity in the cuprate planes.

Original language	English (US)
Pages (from-to)	519-523
Number of pages	5
Journal	Solid State Communications
Volume	77
Issue number	7
DOIs	https://doi.org/10.1016/0038-1098(91)90732-B
State	Published - Feb 1991

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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Wolf, E. L., Tao, H. J., & Susla, B. (1991). Tunneling evidence of strong cooper-pair-breaking near T_c in cuprate superconductors. Solid State Communications, 77(7), 519-523. https://doi.org/10.1016/0038-1098(91)90732-B

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abstract = "The superconductive tunneling density of states obtained from conventional metal film-insulator tunnel junctions on cleaved (ab) basal planes of single crystal Bi2Sr2CaCu2O8+y (2212) reveals a rising pair breaking rate Γ(T) near Tc, as predicted by Lee and Read. We obtain Γ(T)=2.3 kTc(T/Tc)3, which confirms a recent calculation by Coffey and also recent tunneling results of Takada et al on YBa2Cu3O6. This implies a pair lifetime at Tc of about 40 fs in 2212. The results indicate that the T3 pairbreaking near Tc is an intrinsic feature of superconductivity in the cuprate planes.",

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N2 - The superconductive tunneling density of states obtained from conventional metal film-insulator tunnel junctions on cleaved (ab) basal planes of single crystal Bi2Sr2CaCu2O8+y (2212) reveals a rising pair breaking rate Γ(T) near Tc, as predicted by Lee and Read. We obtain Γ(T)=2.3 kTc(T/Tc)3, which confirms a recent calculation by Coffey and also recent tunneling results of Takada et al on YBa2Cu3O6. This implies a pair lifetime at Tc of about 40 fs in 2212. The results indicate that the T3 pairbreaking near Tc is an intrinsic feature of superconductivity in the cuprate planes.

AB - The superconductive tunneling density of states obtained from conventional metal film-insulator tunnel junctions on cleaved (ab) basal planes of single crystal Bi2Sr2CaCu2O8+y (2212) reveals a rising pair breaking rate Γ(T) near Tc, as predicted by Lee and Read. We obtain Γ(T)=2.3 kTc(T/Tc)3, which confirms a recent calculation by Coffey and also recent tunneling results of Takada et al on YBa2Cu3O6. This implies a pair lifetime at Tc of about 40 fs in 2212. The results indicate that the T3 pairbreaking near Tc is an intrinsic feature of superconductivity in the cuprate planes.

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