Vortex structure in YBa2Cu3O7 and evidence for intrinsic pinning

Using the high-resolution Bitter-pattern technique, the vortex structure in crystals of the high-T(c) superconductor, YBa2Cu3O7, for fields parallel to the c axis is studied. The vortex pinning by twin boundaries is examined, showing that a vortex lattice develops in twin-free regions. Vortices are...

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Bibliographic Details
Published in:Physical review letters 1989-02, Vol.62 (7), p.827-830
Main Authors: Dolan, GJ, Chandrashekhar, GV, Dinger, TR, Feild, C, Holtzberg, F
Format: Article
Language:English
Online Access:Get full text
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Summary:Using the high-resolution Bitter-pattern technique, the vortex structure in crystals of the high-T(c) superconductor, YBa2Cu3O7, for fields parallel to the c axis is studied. The vortex pinning by twin boundaries is examined, showing that a vortex lattice develops in twin-free regions. Vortices are pinned at low temperatures even in crystals which are essentially defect free. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.62.827