Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8164164 | Physica C: Superconductivity and its Applications | 2018 | 4 Pages |
Abstract
We reveal that the temperature dependence of the basal-plane normal-state electrical resistance of optimally doped YBa2Cu3O7âδ single crystals can be with great accuracy approximated within the framework of the model of s-d electron-phonon scattering. This requires taking into account the fluctuation conductivity whose contribution exponentially increases with decreasing temperature and decreases with an increase of oxygen deficiency. Room-temperature annealing improves the sample and, thus, increases the superconducting transition temperature. The temperature of the 2D-3D crossover decreases during annealing.
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Physical Sciences and Engineering
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Condensed Matter Physics
Authors
G.Ya. Khadzhai, R.V. Vovk, N.R. Vovk, S.N. Kamchatnaya, O.V. Dobrovolskiy,