Počet záznamů: 1

Rectified vortex motion in an Nb film with a spacing-graded array of holes

SYSNO ASEP	0342309
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Rectified vortex motion in an Nb film with a spacing-graded array of holes
Tvůrce(i)	Wu, T.C. (TW) Cao, R. (TW) Yang, T.-J. (TW) Horng, L. (TW) Wu, J.C. (TW) Koláček, Jan (FZU-D)_{RID, ORCID}
Zdroj.dok.	Solid State Communications. - : Elsevier - ISSN 0038-1098 Roč. 150, 5-6 (2010), s. 280-284
Poč.str.	5 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	superconductor ; thin films ; scanning electron microscopy, ; flux pinning
Vědní obor RIV	BM - Fyzika pevných látek a magnetismus
CEP	GA202/08/0326 GA ČR - Grantová agentura ČR
CEZ	AV0Z10100521 - FZU-D (2005-2011)
UT WOS	000274459600013
DOI	10.1016/j.ssc.2009.11.006
Anotace	Superconducting Nb thin films with a spacing-graded array of holes were prepared by electron beam lithography. Two films with different hole gradients were fabricated. The ac-driven vortices were investigated in Nb superconductors with a spacing-graded array of holes. The measurements revealed pronounced rectified voltage when the vortex lattice is driven by an ac injected current. The rectified voltage is mainly caused by the strength of the vortex-vortex interaction. The rectified motion of a vortex is affected by the pinning potential of the spacing-graded array and the applied magnetic field. The vortex-vortex interaction strength changes the effective pinning landscape of the vortices and an asymmetric potential is formed. Vortices depin easily from high concentration to low concentration of pinning sites. In both samples, the ac-driven vortices exhibit a variety of dynamical responses and the rectified voltage is tunable with the applied magnetic field.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2011

Počet záznamů: 1