Title
Vortex configurations in mesoscopic superconducting triangles: finite-size and shape effects Vortex configurations in mesoscopic superconducting triangles: finite-size and shape effects
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Paris ,
Subject
Physics
Source (journal)
Europhysics letters. - Paris
Volume/pages
83(2008) :1 , p. 17008,1-17008,6
ISSN
0295-5075
ISI
000259020300030
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Triangular-shaped mesoscopic superconductors are consistent with the symmetry of the Abrikosov vortex lattice resulting in a high stability of vortex patterns for commensurate vorticities. However, for non-commensurate vorticities, vortex configurations in triangles are not compatible with the sample shape. Here we present the first direct observation of vortex configurations in ìm-sized niobium triangles using the Bitter decoration technique, and we analyze the vortex states in triangles by analytically solving the London equations and performing molecular-dynamics simulations. We found that filling rules with increasing vorticity can be formulated for triangles in a similar way as for mesoscopic disks where vortices form shells.
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