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Parallel and perpen...
Parallel and perpendicular field investigations of coupled high-Tc multilayer structures
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- Fivat, Patrice (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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- Triscone, Jean-Marc (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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- Andersson, Magnus (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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- Decroux, Michel (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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- Fischer, Oystein (författare)
- Dept. de la Matière Condensée, University of Geneva, Geneva
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Dept de la Matière Condensée, University of Geneva, Geneva (creator_code:org_t)
- Bellingham : SPIE - International Society for Optical Engineering, 1994
- 1994
- Engelska.
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Ingår i: Superconducting Superlattices and Multilayers. - Bellingham : SPIE - International Society for Optical Engineering. ; , s. 192-198
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We report on the behavior of high Tc superconductors coupled multilayer structures in magnetic field parallel and perpendicular to the ab plane. These structures consist of N 24 angstroms thick DyBa2Cu3O7 layers, each separated from the next by 96 angstroms of an (Y0.45Pr0.55)Ba2Cu3O7 alloy. This alloy allows a coupling of the superconducting layers as demonstrated by measurements of the activation energies for flux motion U. For a N = 15 sample one finds, in perpendicular fields, that a correlated motion of pancake vortices occurs with a characteristic length of about 480 angstroms. Additionally, U is found to be proportional to logB at low fields while at higher fields a power law behavior is observed. In parallel field we find U to be field independent up to 1 T, suggesting that the vortices are trapped at low fields in the material where weak superconductivity is induced by proximity effect.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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