Microwave study of magnetic field penetration parallel to thin niobium films
Complex conductivity of high quality niobium thin films has been investigated by microwave technique in parallel static magnetic field. For the 40 nm thick film no vortices can be formed and the microwave penetration is defined by the strength of the superconducting order parameter which varies with...
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Published in | Physica. C, Superconductivity Vol. 460; no. 2; pp. 1293 - 1294 |
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Main Authors | , , , , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.09.2007
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | Complex conductivity of high quality niobium thin films has been investigated by microwave technique in parallel static magnetic field. For the 40
nm thick film no vortices can be formed and the microwave penetration is defined by the strength of the superconducting order parameter which varies with the applied magnetic field. 160
nm thick measured film allows formation of two rows of vortices. Microwave dissipiation is dominated by dynamics of vortices which is strongly affected by size effects. Results have been compared with the generalised models of complex conductivity for low-dimensional superconductor in mixed state following earlier considerations by other authors. |
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Bibliography: | SourceType-Scholarly Journals-2 ObjectType-Feature-2 ObjectType-Conference Paper-1 content type line 23 SourceType-Conference Papers & Proceedings-1 ObjectType-Article-3 |
ISSN: | 0921-4534 1873-2143 |
DOI: | 10.1016/j.physc.2007.03.415 |