Magnetic noise around metallic microstructures

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dc.creatorZhang, Bo
dc.creatorHenkel, Carsten
dc.date2007-06-05
dc.date2007-09-10
dc.date.accessioned2026-07-07T09:42:28Z
dc.date.available2026-07-07T09:42:28Z
dc.descriptionWe compute the local spectrum of the magnetic field near a metallic microstructure at finite temperature. Our main focus is on deviations from a plane-layered geometry for which we review the main properties. Arbitrary geometries are handled with the help of numerical calculations based on surface integral equations. The magnetic noise shows a significant polarization anisotropy above flat wires with finite lateral width, in stark contrast to an infinitely wide wire. Within the limits of a two-dimensional setting, our results provide accurate estimates for loss and dephasing rates in so-called `atom chip traps' based on metallic wires. A simple approximation based on the incoherent summation of local current elements gives qualitative agreement with the numerics, but fails to describe current correlations among neighboring objects.
dc.description10 pages, 9 figures, accepted for publication in J Appl Phys; figures plotted for slightly smaller structure
dc.identifierhttps://arxiv.org/abs/0706.0686
dc.identifierhttp://arxiv.org/abs/0706.0686
dc.identifierJ. Appl. Phys. 102 (2007) 084907
dc.identifierdoi:10.1063/1.2800174
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162195
dc.subjectClassical Physics
dc.subjectMaterials Science
dc.subjectAtomic Physics
dc.titleMagnetic noise around metallic microstructures
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