Volume 72, Number 3, November 2005
|Page(s)||465 - 471|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||05 October 2005|
Molecular induced field effect in superconducting films
Department of Chemical Physics, Weizmann Institute of Science Rehovot 76100, Israel
2 Physics Department, Bar-Ilan University - Ramat Gan 52900, Israel
3 Chemical Research Support, Weizmann Institute of Science Rehovot 76100, Israel
Accepted: 14 September 2005
The study of the effect of self-assembled organic monolayers on the critical current in thin superconducting Nb films is presented. Correlation is found between the coverage of the adsorbed layer and the critical current. A large change of up to 50% in the critical current by the well-organized monolayers is observed. The phenomenon is explained by the adsorption-induced electric field effect diminishing the surface pinning force.
PACS: 74.78.-w – Superconducting films and low-dimensional structures / 82.65.+r – Surface and interface chemistry; heterogeneous catalysis at surfaces / 68.47.Pe – Langmuir-Blodgett films on solids; polymers on surfaces; biological molecules on surfaces
© EDP Sciences, 2005
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