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Determining the vortex tilt relative to a superconductor surface

TitleDetermining the vortex tilt relative to a superconductor surface
Publication TypeJournal Article
Year of Publication2017
AuthorsKogan, VG, Kirtley, JR
JournalPhysical Review B
Volume96
Pagination174516
Date Published11
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000415674700005
Keywordsfields, films, force microscope, lattice, lines, physics, quantum interference device, vortices
Abstract

It is of interest to determine the exit angle of a vortex from a superconductor surface, since this affects the intervortex interactions and their consequences. Two ways to determine this angle are to image the vortex magnetic fields above the surface, or the vortex core shape at the surface. In this work we evaluate the field h(x, y, z) above a flat superconducting surface x, y and the currents J(x, y) at that surface for a straight vortex tilted relative to the normal to the surface, for both the isotropic and anisotropic cases. In principle, these results can be used to determine the vortex exit tilt angle from analyses of magnetic field imaging or density of states data.

DOI10.1103/PhysRevB.96.174516
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Complex States