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Critical current densities (up to 20 T) of high Tc REBa2Cu3O7, Bi2Sr2CaCu2O8, Tl2Ba2CaCu2O8 crystals

โœ Scribed by M. Guillot; J.L. Tholence; O. Laborde; M. Potel; P. Gougeon; H. Noel; J.C. Levet

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
127 KB
Volume
162-164
Category
Article
ISSN
0921-4534

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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