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 (11)

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• Moving Vortex Phases, Dynamical Symmetry Breaking, and Jamming for Vortices in Honeycomb Pinning Arrays
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• Nanopattern-stimulated superconductor-insulator transition in thin TiN films
• Parity-time symmetry-breaking mechanism of dynamic Mott transitions in dissipative systems
• A two-coil mutual inductance technique to study matching effect in disordered NbN thin films
• Dynamic transition from Mott-like to metal-like state of the vortex lattice in a superconducting film with a periodic array of holes
• Picosecond Trajectory of Two-dimensional Vortex Motion in FeSe${}_{0.5}$Te${}_{0.5}$ Visualized by Terahertz Second Harmonic Generation
• Vortex Transport and Pinning Effectiveness in Conformal Pinning Arrays
• Origin of Matching Effect in Anti-dot Array of Superconducting NbN Thin Films
• Multi-vortex versus interstitial vortices scenario in superconducting antidot arrays
• Observation of Vortex Matching Phenomena in Antidot Array of NbN Thin Film
• Metastable inhomogeneous vortex configuration with non-uniform filling fraction inside a blind hole array patterned in a BSCCO single crystal and concentrating magnetic flux inside it
• Commensurate - Incommensurate vortex phase in a nanopatterned superconductor