Aa. Golubov et al., EFFECT OF IMPURITY SCATTERING ON THE MAGNETIC-FIELD PENETRATION DEPTHIN YBA(2)CU(3)O7-DELTA - COMPARISON WITH EXPERIMENTS, JETP letters, 62(6), 1995, pp. 496-502
The temperature dependence of the anisotropic magnetic field penetrati
on depth of a two-band superconductor is calculated in the model of st
rong s-wave pairing interaction in one of the bands (S band) and induc
ed superconductivity in the second band (N band). The results of the c
alculations are compared with experimental data on the ab-plane and c-
axis penetration depth in YBa2Cu3O7-delta. It is shown that all recent
measurements are consistent with the two-band model over the entire t
emperature range. (C) 1995 American Institute of Physics.