Journal
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Volume 474, Issue -, Pages 18-20Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physc.2011.12.004
Keywords
MgB2; Flux vortices; Lorentz microscopy; Superconductivity
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Funding
- Royal Society
- EPSRC [EP/E027903/1]
- EPSRC [EP/E027903/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E027903/1] Funding Source: researchfish
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We report the successful imaging of flux vortices in single crystal MgB2 using transmission electron microscopy. The specimen was thinned to electron transparency (350 nm thickness) by focussed ion beam milling. An artefact of the thinning process was the production of longitudinal thickness undulations of height 1-2 nm in the sample which acted as pinning sites due to the energy required for the vortices to cross them. These had a profound effect on the patterns of vortex order observed which we examine here. (C) 2011 Elsevier B. V. All rights reserved.
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