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Superconducting energy gaps in YBa2Cu3O7 and Bi2Sr2CaCu2O8

✍ Scribed by T. Ekino; T. Minami; H. Fujii; J. Akimitsu

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
181 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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✦ Synopsis

We report tunneling measurements of the superconducting energy gaps in YBa.Cu307 and Bi2Sr.CaCthO 8 using b~eak junctions. The differential conductance d/fdV at T = 4.2 K shows no leakage around zero ba~s, while the t,,q~ -dge peaks m d//dV are somewhat broadened compared to the simple BCS density of states. Th~s strong.Iv ,eggests an s-wave superconductivity with an anisotropic gap. From the best data, we obtain a result that &c gap anisotropy in Bi~Sr2CaCu208 is larger than that m YBazCu~O 7.

πŸ“œ SIMILAR VOLUMES

Critical and Gaussian conductivity fluct
Critical and Gaussian conductivity fluctuations in YBa2Cu3O7βˆ’Ξ΄ and Bi2Sr2CaCu2O8
✍ P. Pureur; R.Menegotto Costa; P. Rodrigues Jr.; J.V. Kunzler; J. Schaf; L. Ghive πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 139 KB

Systemauc conductivity lluctuatmn measurements are reported for polycryatalhne YBa2Cu3OT\_ 8 and singlecrystal Bi2Sr2CaCu208. Gaussian and criucal regimes are observed For both systems, the crmcal exponents are consistent with s-wave pairmg.