Tejada Palacios, JavierChudnovsky, Eugene M., 1948-García Santiago, Antoni2009-10-202009-10-2019930163-1829https://hdl.handle.net/2445/9730Magnetic-relaxation measurements of a Tl-based high-Tc superconductor show temperature-independent flux creep below 6 K. The effect is analyzed in terms of the overdamped quantum diffusion of two-dimensional vortices. Good agreement between theory and experiment is found.3 p.application/pdfeng(c) The American Physical Society, 1993Efecte túnelSuperconductorsRelaxació (Física nuclear)Tunneling (Physics)Superconductorsinfo:eu-repo/semantics/article9194info:eu-repo/semantics/openAccess