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SMALL-ANGLE NEUTRON-DIFFRACTION STUDIES OF VORTEX STRUCTURES IN HIGH-TEMPERATURE SUPERCONDUCTORS

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UNSPECIFIED (1994) SMALL-ANGLE NEUTRON-DIFFRACTION STUDIES OF VORTEX STRUCTURES IN HIGH-TEMPERATURE SUPERCONDUCTORS. In: International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV), GRENOBLE, FRANCE, JUL 05-09, 1994. Published in: PHYSICA C, 235 (Part 4). pp. 2583-2584. ISSN 0921-4534.

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Abstract

We have used neutron scattering to provide direct information about flux structures in the bulk of crystals of the superconductor Bi2Sr2CaCu2O8. Its extremely high effective mass anisotropy, makes the flux lattice susceptable to melting and also to decomposition into 'pancake' vortices, which would give a more two-dimensional vortex structure. At low temperatures and fields the scattered intensity is consistent with a three dimensional flux-line structure. At higher fields and temperatures, the scattering from the flux lattice dissapears well below T-c. We can associate this dissappearance with the above changes in the vortex structure. We compare the neutron scattering results with macroscopic measurements of magnetisation.

Item Type: Conference Item (UNSPECIFIED)
Subjects: Q Science > QC Physics
Journal or Publication Title: PHYSICA C
Publisher: ELSEVIER SCIENCE BV
ISSN: 0921-4534
Official Date: December 1994
Dates:
DateEvent
December 1994UNSPECIFIED
Volume: 235
Number: Part 4
Number of Pages: 2
Page Range: pp. 2583-2584
Publication Status: Published
Title of Event: International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV)
Location of Event: GRENOBLE, FRANCE
Date(s) of Event: JUL 05-09, 1994

Data sourced from Thomson Reuters' Web of Knowledge

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