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- Title
Unusually strong coherent response from grain-boundary Josephson network in polycrystalline Pr<sub> x</sub>Y<sub>1 − x</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7 − δ</sub>.
- Authors
Rivera, V. A. G.; Sergeenkov, S.; Stari, C.; Cichetto, L. Jr.; Cardoso, C. A.; Marega, E.; Araujo-Moreira, F. M.
- Abstract
By applying a highly sensitive homemade AC susceptibility technique to Pr xY1 − xBa2Cu3O7 − δ polycrystals (with x = 0.0, 0.1, and 0.3), we observed very sharp Fraunhofer type low-field periodic oscillations of the real part of the AC susceptibility which were attributed to Josephson vortices penetrating intergranular regions of grain-boundary Josephson network in our samples. Assuming the Lorentz type distribution of single-junction contact areas, we were able to successfully fit the experimental data.
- Subjects
CRYSTAL grain boundaries; POLYCRYSTALS; JOSEPHSON junctions; LORENTZ spaces; FRAUNHOFER lines
- Publication
JETP Letters, 2009, Vol 90, Issue 5, p365
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364009170111