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Title: Magnetic force microscopy on superconducting NbSe2 and Nb surfaces
Authors: Volodine, Alexandre ×
Temst, Kristiaan
Van Haesendonck, Christian
Bruynseraede, Yvan #
Issue Date: Jul-2000
Publisher: Elsevier science bv
Series Title: Physica B vol:284 pages:815-816
Abstract: We have imaged vortices in the conventional superconductors NbSe2 (crystal) and Nb (thin film) with a low-temperature magnetic force microscope (MFM). The MFM detection is based on commercially available piezoresistive cantilevers. The improved sensitivity (0.2 pN/nm) at 4.3 K has been obtained by using a higher flexural mode of the cantilever. The operation at higher mechanical resonances allows to improve the signal-to-noise ratio by a factor of 3, while limiting the heat dissipation to 50 mu W. The magnetic tip coating was optimized by relying on Co/Au multilayers grown by molecular beam epitaxy. The possibility to image the Abrikosov vortex lattice in NbSe2 can be understood in terms of collective pinning effects. (C) 2000 Elsevier Science B.V. All rights reserved.
URI: 
ISSN: 0921-4526
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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