Anisotropic energy dissipation, flux flow and topological pinning in ceramic superconductors

D. Lopez; R. Decca; F. De La Cruz

doi:10.1088/0953-2048/5/1S/061

Anisotropic energy dissipation, flux flow and topological pinning in ceramic superconductors

D. Lopez
, R. Decca
, F. De La Cruz

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The dissipation in the high T_c ceramic superconductor La _1.85Sr_0.15CuO_{4- delta} is interpreted in terms of interacting magnetic flux systems: vortices in the ceramic grains and fluxons between them. In zero field cooling experiments the dissipation shows a sin² Theta dependence, where Theta is the angle between current and field. This result and the existence of an angle independent critical current are analyzed in the framework of a granular system where the dissipation is due to two contributions, one induced by movement of magnetic flux and the other associated to dissipation in the junctions.

Original language	English (US)
Article number	061
Pages (from-to)	S276-S279
Journal	Superconductor Science and Technology
Volume	5
Issue number	1S
DOIs	https://doi.org/10.1088/0953-2048/5/1S/061
State	Published - 1992

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/5/1S/061

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abstract = "The dissipation in the high Tc ceramic superconductor La 1.85Sr0.15CuO4- delta is interpreted in terms of interacting magnetic flux systems: vortices in the ceramic grains and fluxons between them. In zero field cooling experiments the dissipation shows a sin2 Theta dependence, where Theta is the angle between current and field. This result and the existence of an angle independent critical current are analyzed in the framework of a granular system where the dissipation is due to two contributions, one induced by movement of magnetic flux and the other associated to dissipation in the junctions.",

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AU - Decca, R.

AU - De La Cruz, F.

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N2 - The dissipation in the high Tc ceramic superconductor La 1.85Sr0.15CuO4- delta is interpreted in terms of interacting magnetic flux systems: vortices in the ceramic grains and fluxons between them. In zero field cooling experiments the dissipation shows a sin2 Theta dependence, where Theta is the angle between current and field. This result and the existence of an angle independent critical current are analyzed in the framework of a granular system where the dissipation is due to two contributions, one induced by movement of magnetic flux and the other associated to dissipation in the junctions.

AB - The dissipation in the high Tc ceramic superconductor La 1.85Sr0.15CuO4- delta is interpreted in terms of interacting magnetic flux systems: vortices in the ceramic grains and fluxons between them. In zero field cooling experiments the dissipation shows a sin2 Theta dependence, where Theta is the angle between current and field. This result and the existence of an angle independent critical current are analyzed in the framework of a granular system where the dissipation is due to two contributions, one induced by movement of magnetic flux and the other associated to dissipation in the junctions.

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M1 - 061

ER -

Anisotropic energy dissipation, flux flow and topological pinning in ceramic superconductors

Abstract

All Science Journal Classification (ASJC) codes

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