2026-04-17T10:42:34Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4017222025-10-13T00:37:00Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Chen, Du-Xing author Sánchez Moreno, Álvaro author Pardo Vivé, Enric author Bartolomé Porcar, María Elena author American Physical Society author 2006 The field-amplitude and frequency dependent complex ac susceptibility of a well sinteredYBa2Cu3O7-δ disk has been measured at 77K, which shows that its intra- and intergranular critical-current densities are determined by the collective flux creep inside the grains and the maximum Josephsoncurrents across the grain boundaries, respectively. While the former is widely recognized, the latter contrasts to a popular belief of a mechanism of Josephson-vortex pinning and creep. High temperature superconductivity Superconductivity models Sintering Creep Josephson effect Josephson junctions Critical currents Flux creep Rotating flows Superconductors ac susceptibility and critical-current densities in sintered YBa2Cu3O7-δ superconductors