J.A. Barker, D. Henderson, et al.
Molecular Physics
Paper
Quantum tunneling of vortices in Bi-2212 with randomly oriented columnar defects
Abstract
Vortex pinning in textured Bi-2212/Ag superconducting tapes was enhanced by randomly oriented columnar defects, formed by GeV proton-induced fission of Bi-nuclei. Studies of J versus time in the range 2-40 K shows that thermally activated current decay decreased greatly. However, temperature-independent quantum tunneling of vortices considerably limits J and its temporal stability for a significant fraction of the finite-Jc region. © 2000 Elsevier Science B. V. All rights reserved.
Related
C.M. Brown, L. Cristofolini, et al.
Chemistry of Materials
A. Ney, R. Rajaram, et al.
Journal of Magnetism and Magnetic Materials
William G. Van der Sluys, Alfred P. Sattelberger, et al.
Polyhedron