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Proceedings Paper

Some problems in scanning probe microscopy of vortices in superconductors
Author(s): Uwe Hartmann; T. Drechsler; Christoph Heiden
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Paper Abstract

The vortex lattice in clean 2H-NbSe2 is investigated by STM at 4.2 K. The experimental results predominantly address three major issues of current importance. (1) Sufficiently large in-plane transport currents through the superconducting sample cause the motion of vortices, which can directly be detected. (2) The apparent vortex diameter is about twice that expected from elementary theory. A pronounced shrinking of the vortex core with increasing external magnetic field is observed. (3) The STM results combined with some elementary magnetostatic model calculations shed some light on the difficulties encountered in the imaging of flux line lattices by magnetic force microscopy.

Paper Details

Date Published: 4 June 1993
PDF: 12 pages
Proc. SPIE 1855, Scanning Probe Microscopies II, (4 June 1993); doi: 10.1117/12.146370
Show Author Affiliations
Uwe Hartmann, KFA/Institute of Thin Film and Ion Technology (Germany)
T. Drechsler, KFA/Institute of Thin Film and Ion Technology (Germany)
Christoph Heiden, KFA/Institute of Thin Film and Ion Technology (Germany)

Published in SPIE Proceedings Vol. 1855:
Scanning Probe Microscopies II
Clayton C. Williams, Editor(s)

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