Table 1.

Critical currents in a strip of width W = 64ξ at magnetic field B = 0.1H_c2 for different defect distributions: clean strip without defects, uniform concentration of defects, optimized concentration of defects in the bulk and near the edges, reduced defect concentration at both edges [l_in, l_out > 0 in Eq. (5)], and reduced defect concentration at the vortex entrance and exit.

Type	f	l in	l out	J c	cf. clean
clean	0.0	—	—	0.081Jdp	100%	Fig. 2
uniform	0.2	0	0	0.108Jdp	135%	Fig. 3
optimized	0.2	9ξ	31ξ	0.142Jdp	178%	Eq. (4)
both	0.2	10ξ	30ξ	0.140Jdp	175%	Fig. 4
in	0.2	10ξ	0	0.118Jdp	148%	Fig. 5
out	0.2	0	30ξ	0.131Jdp	164%	Fig. 6

The defects are circular with diameter d = 3ξ.