Commensurability Effects in Superconducting Nb Films with Quasiperiodic Pinning Arrays
M. Kemmler, C. Gürlich, A. Sterck, H. Pöhler, M. Neuhaus, M. Siegel, R. Kleiner, D. Koelle
DOI 10.1103/PhysRevLett.97.147003 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We study experimentally the critical depinning current Ic versus applied magnetic field B in Nb thin films which contain 2D arrays of circular antidots placed on the nodes of quasiperiodic (QP) fivefold Penrose lattices. Close to the transition temperature Tc we observe matching of the vortex lattice with the QP pinning array, confirming essential features in the Ic(B) patterns as predicted by Misko et al. [Phys. Rev. Lett. 95, 177007 (2005)]. We find a significant enhancement in Ic(B) for QP pinning arrays in comparison to Ic in samples with randomly distributed antidots or no antidots.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8.66 | Pressure unresolved | unknown |
Similar papers
Reversibility Of Superconducting Nb Weak Links Driven By The Proximity Effect In A Quantum Interference Device
similarity 0.95Nikhil Kumar et al.
Source status unknown — claims are unverified
Influence of magnetic domain landscape on the flux dynamics in superconductor/ferromagnet bilayers
similarity 0.95Z. Adamus et al.
Source status unknown — claims are unverified
Thickness dependence on the superconducting properties of thin Nb films
similarity 0.94M. S. M. Minhaj et al.
Source status unknown — claims are unverified
Nb-Based Nanoscale Superconducting Quantum Interference Devices Tuned by Electroannealing
similarity 0.94Simon Collienne et al.
Source status unknown — claims are unverified
Superconductivity and electrical properties in single-crystalline ultrathin Nb films grown by molecular-beam epitaxy
similarity 0.94K. Yoshii et al.
Source status unknown — claims are unverified
Dynamics and thermal instability of magnetic flux in type-II superconductors
similarity 0.94B. Ya. Shapiro et al.
Source status unknown — claims are unverified