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Title: Influence of the interface roughness of J(c) of Ge/Pb/Ge sandwiches
Authors: Temst, Kristiaan ×
Baert, M
Rosseel, E
Dhalle, M
Potter, CD
Moshchalkov, Victor
Van Haesendonck, Christian
Bruynseraede, Yvan
Metlushko, VV
Guntherodt, G
Hellemans, Louis
Snauwaert, Johan #
Issue Date: Jan-1994
Publisher: Elsevier science bv
Series Title: Physica B vol:194 pages:2373-2374
Abstract: Critical current densities J(c) for fields applied perpendicular to MBE prepared Ge/Pb/Ge sandwiches and bare Pb films have been obtained from magnetization measurements. The single Pb film shows smooth magnetization loops at all temperatures and a monotonous decrease of J(c) with rising temperature. The Ge/Pb/Ge sandwiches reveal peaks in the magnetization curves at lower temperatures and become smooth only in the vicinity of T(c) (congruent-to 7K). J(c)(T) for the sandwiches shows a well defined maximum at approximately 5K. As a result, the J(c) values of this sandwich are increased by a factor of 3 in the temperature range 5-7K. This different behaviour may be due to enhanced pinning at the Ge-Pb interfaces, which were studied using Atomic Force Microscopy (AFM).
ISSN: 0921-4526
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Chemistry - miscellaneous
Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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