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Precision magnetometry on a submicron scale: magnetisation of superconducting quantum dots
Geim, A K; Grigorieva, I V; Lok, J G S; Maan, J C; Dubonos, S V; Li, X Q; Peeters, F M; Nazarov, Y V
Superlattices and Microstructures. 1998;23(1):151-160.
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Abstract
We report on magnetisation of individual superconducting particles with size down to 0.1 micron. The non-invasive access to properties of such small objects has become possible using submicron Hall probes which detect a local magnetic field and work effectively as micro-fluxmeters similar to, e.g., SQUIDs but with an effective detection loop of only about a square micron. We have found that the spatial confinement of superconductivity in a small volume gives rise to dramatic changes in thermodynamic properties of mesoscopic superconductors. (C) 1998 Academic Press Limited.
Keyword(s)
magnetisation; magnetization; mesoscopic; microscopy; single; superconductivity
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