Cold cousin of the colloids

Stephen Battersby

Nature, 1998, vol. 392, issue 6677, 660-660

Abstract: The useful properties of high-temperature superconductors are impaired by magnetic flux lines, or vortices, which dissipate energy and so cause resistance — unless pinned in place. Video films of the vortices show that they move like particles in liquids that are subject to Brownian motion, staggering from one pinning site (a defect in the lattice) to another. This insight has allowed ready-made data analysis techniques to map the so-called ‘pinscape’ and could eventually help in exploiting natural pinning to improve the performance of superconducting devices.

Date: 1998
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DOI: 10.1038/33558

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