Abstract
We have produced magnetic patterns suitable for trapping and manipulating neutral atoms on a 1-μm length scale. The required patterns are made in Co/Pt thin films on a silicon substrate, using the heat from a focused laser beam to induce controlled domain reversal. In this way we draw lines and ‘paint’ shaped areas of reversed magnetisation with sub-micron resolution. These structures produce magnetic microtraps above the surface that are suitable for holding rubidium atoms with trap frequencies as high as ∼1 MHz.
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39.25.+k; 03.75.Be; 75.50.Ss; 75.70.-i
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Eriksson, S., Ramirez-Martinez, F., Curtis, E. et al. Micron-sized atom traps made from magneto-optical thin films. Appl Phys B 79, 811–816 (2004). https://doi.org/10.1007/s00340-004-1655-7
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DOI: https://doi.org/10.1007/s00340-004-1655-7