Experimental and simulation study of missing matching peaks in Nb thinfilms with square pinning arrays

0361365 - FZÚ 2012 RIV US eng J - Článek v odborném periodiku
Cao, R. - Horng, L. - Wu, T.C. - Lin, J.C. - Wu, J.C. - Yang, T.-J. - Koláček, Jan
Experimental and simulation study of missing matching peaks in Nb thinfilms with square pinning arrays.
Journal of Applied Physics. Roč. 109, č. 8 (2011), "083920-1"-"083920-5". ISSN 0021-8979. E-ISSN 1089-7550
Grant CEP: GA ČR(CZ) GAP204/11/0015; GA MŠMT(CZ) ME10069
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: critical currents * flux pinning * galvanomagnetic effects * interstitials * metallic thin films * niobium * superconducting thin films
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.168, rok: 2011

Square arrays of circular pinning centers of various diameters were patterned in Nb thin films to explore their vortex pinning behavior. Periodic critical current matching peaks and some "missing peaks" were observed in magnetotransport measurements. The larger the diameter of the pinning centers, the higher the index of the missing matching fields observed. This phenomenon is explained by molecular dynamics simulations and is caused by the interaction between interstitial vortices and vortices occupying the pinning centers.
Trvalý link: http://hdl.handle.net/11104/0198691