Magnetic field - dependent Labusch parameter in LiFeAs superconductor from Campbell penetration depth

Plengchart Prommapan, Makariy A. Tanatar, Bumsung Lee +3

A true critical current density, $j_c$, as opposite to commonly measured relaxed persistent (Bean) current, $j_B$, was extracted from the Campbell penetration depth, $λ_{C}(T,H…