Vortex matching effect in engineered thin films of NbN

Abstract

We report robust vortex matching effects in antidot arrays fabricated on thin films of NbN. The near absence of hysteresis between field sweep directions indicates a negligible residual pinning in the host thin film. Owing to the very small coherence length of NbN thin films ($\xi <5nm$), the observations suggests the possibility of probing physics of vortices at true nanometer length scales in suitably fabricated structures.

Submitted to Appl. Phys. Lett

References in corpus (3)

• Superconducting properties and Hall Effect of epitaxial NbN thin films
• Tunneling studies in a homogeneously disordered s-wave superconductor: NbN
• Tunable anisotropic nonlinearity in superconductors with asymmetric antidot array