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Electromigration in the dissipative state of high-temperature superconducting bridges

Journal Contribution - Journal Article

© 2019 Author(s). The current stimulated atomic diffusion in YBa 2 Cu 3 O 7-δ superconducting bridges is investigated. A superconductor to insulator transition can be induced by the current controlled electromigration process, whereas the partial recovery of the superconducting state can be achieved by inverting the polarity of the bias. Interestingly, the temperature dependence of the current density J EM (T), above which atomic migration takes place, intersects the critical current density J c (T) at certain temperature T*. Therefore, for T < T*, the current-induced dissipative state cannot be accessed without leading to irreversible modifications of the material properties. This phenomenon could also lead to the local deterioration of high critical temperature superconducting films abruptly penetrated by thermomagnetic instabilities.
Journal: Applied Physics Letters
ISSN: 0003-6951
Issue: 1
Volume: 114
Publication year:2019
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:1
CSS-citation score:1
Authors:International
Authors from:Higher Education
Accessibility:Open