Roland Willa

Probing the pinning landscape in type-II superconductors via Campbell penetration depth

Type-II superconductors owe their magnetic and transport properties to vortex pinning, the immobilization of flux quanta through material inhomogeneities or defects. Characterizing the potential energy landscape for vortices, the pinning landscape (or short, pinscape), is of great technological importance. Aside from measurement of the critical current density

Suppression of geometric barrier in type-II superconducting strips

{j}_{c}

Campbell Response in Type-II Superconductors under Strong Pinning Conditions.

and of creep rates

Campbell penetration in the critical state of type-II superconductors

S

Nanocalorimetric Evidence for Nematic Superconductivity in the Doped Topological Insulator Sr

, the

_{0.1}

\text{ac}

Bi

magnetic response provides valuable information on the pinscape which is different from that obtained through

_{2}

{j}_{c}

Se

or

_{3}

S