Time effects and glassy state behaviour in superconducting Y1Ba2Cu3O7−x

• Published in: Physica. C, Superconductivity Vol. 463-465; pp. 371 - 373
• Main Authors: Altinkok, A., Yetiş, H., Olutaş, M., Kiliç, K., Kiliç, A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2007; Elsevier Science
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Flux creep; Flux pinning; Physics; Properties of type I and type II superconductors; Superconductivity; Vortex lattices; Vortex lattices ,flux pinning, flux creep; Y-based cuprates; 74.25.Qt; Vortex lattices; 74.72.Bk; Flux pinning; Y-based cuprates; Flux creep; Magnetic flux; Superconductivity; 74.72.Bk; 74.25.Qt; Polycrystals; Cuprates; Time dependence; Y-based cuprates; Vortex lattices; Flux pinning; Flux creep; Barium oxides; High-Tc superconductors; Flux-line lattices; IV characteristic; Copper oxides; Yttrium oxides
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2007.04.234

The quenched disorder in the moving entity is investigated in a polycrystalline bulk sample of Y1Ba2Cu3O7−x (YBCO) by slow transport relaxation measurements (V–t curves) on long time scales. The time evolution of sample voltage (V–t curve) are correlated to spatial reorganization of the driving current together with increasing or decreasing of resistive and non-resistive flow channels in a multiple connected network. In addition, it is shown that the voltage decays appearing in V–t curves are characterized by an exponential time dependence which is analogous to the glassy state relaxation.