TY - JOUR
T1 - Intergranular critical state in uniform Josephson junction arrays
AU - Chen, D. X.
AU - Sanchez, A.
AU - Hernando, A.
PY - 1995/8/1
Y1 - 1995/8/1
N2 - Static intergranular magnetization curves of uniform slab-like Josephson junction arrays with a large junction-critical-current, Imax, and/or a large void area, AV, are calculated as the fully relaxed solutions of a set of DC and AC Josephson equations with gauge-invariant phase differences. The curves always have an oscillatory component. When μ0AVImax/φ0 > 0.5, they are very similar to those calculated from the critical-state model of constant Jc. In this case, there are many possible static states under each given field, the intergranular critical state is the most effective static shielding state with a regional feature selected by dynamic shielding during previous field change. The implications of the results for the mechanism of the intergranular critical state in high-Tc superconductors are discussed. © 1995.
AB - Static intergranular magnetization curves of uniform slab-like Josephson junction arrays with a large junction-critical-current, Imax, and/or a large void area, AV, are calculated as the fully relaxed solutions of a set of DC and AC Josephson equations with gauge-invariant phase differences. The curves always have an oscillatory component. When μ0AVImax/φ0 > 0.5, they are very similar to those calculated from the critical-state model of constant Jc. In this case, there are many possible static states under each given field, the intergranular critical state is the most effective static shielding state with a regional feature selected by dynamic shielding during previous field change. The implications of the results for the mechanism of the intergranular critical state in high-Tc superconductors are discussed. © 1995.
U2 - 10.1016/0921-4534(95)00253-7
DO - 10.1016/0921-4534(95)00253-7
M3 - Article
VL - 250
SP - 107
EP - 120
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -