Title: Influence of sample geometry on vortex matter in superconducting microstructures
Authors: Morelle, Mathieu
Bekaert, Joost
Moshchalkov, Victor #
Issue Date: 2004
Series Title: Physical review. B, Condensed matter and materials physics vol:70 issue:9
Conference: date:Katholieke Univ Leuven, Nanoscale Superconduct & Magnetism Grp, Lab Solid State Phys & Magnetism, B-3001 Leuven, Belgium
Abstract: The dependence of the vortex penetration and expulsion on the geometry of mesoscopic superconductors is reported. Hall magnetometry measurements were performed on a superconducting Al square and triangle. The stability of the vortex patterns imposed by the sample geometry is discussed. The field-temperature H-T diagram has been reconstructed showing the transitions between states with different vorticity. We have found that the vortex penetration is only weakly affected by the vortex configuration inside the sample while the expulsion is strongly controlled by the stability of the vortex patterns. A qualitative explanation for this observation is given.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
# (joint) last author

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