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Pré-Publication, Document De Travail Année : 2004

The role of wire imperfections in micro magnetic traps for atoms

Résumé

We present a quantitative study of roughness in the magnitude of the magnetic fieldproduced by a current carrying microwire, {\it i.e.} in the trapping potential for paramagnetic atoms.We show that this potential roughness arises from deviations in the wire current flow due to geometric fluctuations of the edges of the wire~: a measurement of the potentialusing cold trapped atoms agrees with the potential computed from the measurement of the wire edge roughness by a scanning electronmicroscope.

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Dates et versions

hal-00001231 , version 1 (01-03-2004)
hal-00001231 , version 2 (08-03-2004)
hal-00001231 , version 3 (10-03-2004)
hal-00001231 , version 4 (16-03-2004)
hal-00001231 , version 5 (23-07-2004)

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Jérôme Estève, Christine Aussibal, Thorsten Schumm, Cristina Figl, Dominique Mailly, et al.. The role of wire imperfections in micro magnetic traps for atoms. 2004. ⟨hal-00001231v1⟩
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