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Superconducting gap and magnetic field effects in Bi2Sr2CaCu2O8

✍ Scribed by G. Martinez; L.C. Brunel; S.G. Louie; S. Labdi; H. Raffy

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
186 KB
Volume
185-189
Category
Article
ISSN
0921-4534

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✦ Synopsis

Superconducting properties of Bi2SrzCaCu208 films have been measured using the infra-red spectroscopy technique at fixed frequency. It is possible with this technique to determine the variation of the order parameter as a function of temperature and the critical magnetic field as a function of temperature. This last result together with the BCS theory allows a determination of the Fermi velocity in the a-b plane of the structure.

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Superconducting energy gaps in YBa2Cu3O7
Superconducting energy gaps in YBa2Cu3O7 and Bi2Sr2CaCu2O8
✍ T. Ekino; T. Minami; H. Fujii; J. Akimitsu πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 181 KB

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 o