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Destruction of Scalino Law for Flux Pinning in Layered Structures

Published online by Cambridge University Press:  26 February 2011

A. N. Lykov  and
V. I. Zdravkov
A. N. Lykov
Affiliation:
Lebedev Physical Institute, USSR Academy of Sciences, 117924, Moscow B-333, Leninsky prospect 53
V. I. Zdravkov
Affiliation:
Lebedev Physical Institute, USSR Academy of Sciences, 117924, Moscow B-333, Leninsky prospect 53
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Abstract

The multilayers based on Nb/NbO (S-I-S) were investigated in external magnetic fields at various temperatures. It was found that the shear deformation of the solid vortex lattice de-termenes critical current density in the case of large period structures and high parallel fields. The solid vortex lattice can be destroyed by decreasing of both the period and the upper critical field. The qualitative change of the magnetic field dependence of the volume pinning force was observed as temperature was increasing. It reveals structural transitioon from elasti-cally deformed flux line lattice to plastically deformed one. Thus the scaling low is destructed for these structures. We have determened the volume pinning force by direct summing of elementary pinning forces in oxide layers in this case.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 275: Symposium S – Layered Superconductors: Fabrication, Properties and Applications , 1992 , 449
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

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