Interstitial flux phases in a superconducting niobium film with a square lattice of artificial pinning centers

Authors
Metlushko, V Welp, U Crabtree, GW Osgood, R Bader, SD DeLong, LE Zhang, Z Brueck, SRJ Ilic, B Chung, K Hesketh, PJ
Citation
V. Metlushko et al., Interstitial flux phases in a superconducting niobium film with a square lattice of artificial pinning centers, PHYS REV B, 60(18), 1999, pp. R12585-R12588
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
18
Year of publication
1999
Pages
R12585 - R12588
Database
ISI
SICI code
0163-1829(19991101)60:18<R12585:IFPIAS>2.0.ZU;2-S
Abstract
We demonstrate that a square lattice of artificial pinning centers in a sup erconducting Nb film induces the formation of highly ordered interstitial v ortex phases with different symmetries for external magnetic fields as high as the eighth matching field. These "supermatching'' phases are identified by distinct differences in the behavior of their critical currents, magnet oresistivity, and magnetization. Our results are consistent with prediction s of supermatching lattice symmetries by recent numerical simulations. [S01 63-1829(99)51142-9].