Meissner effect and structural inhomogeneity in HTSC YBa2Cu3O6.92
Mamsurova L. G. 1, Gavrilkin S. Yu. 2, Mamsurov I. V. 3
1N.N. Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
2Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
3Lomonosov Moscow State University, Moscow, Russia

For optimally doped high-temperature superconductors YBa2Cu3O6.92 with various degrees of structural inhomogeneity, the influence of this inhomogeneity on the manifestation of the Meissner effect is considered. The measurement results indicate that for the samples under study, for which almost identical superconducting transition Tc~92 K temperatures were realized, the Meissner effect values turned out to be different and correlated with the degree of structural inhomogeneity, which is also characteristic of other magnetic properties. Keywords: Superconductivity, HTSC, structural disorder, magnetic properties, d-wave nodes, Fermi arcs, Meissner effect.
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