Sympathetic cooling in an optically trapped mixture of alkali and spin-singlet atoms.
نویسندگان
چکیده
We report on the realization of a stable mixture of ultracold lithium and ytterbium atoms confined in a far-off-resonance optical dipole trap. We observe sympathetic cooling of 6Li by 174Yb and extract the s-wave scattering length magnitude |a(6Li-174Yb)|=(13±3)a0 from the rate of interspecies thermalization. Using forced evaporative cooling of 174Yb, we achieve reduction of the 6Li temperature to below the Fermi temperature, purely through interspecies sympathetic cooling.
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ورودعنوان ژورنال:
- Physical review letters
دوره 106 15 شماره
صفحات -
تاریخ انتشار 2011