Spatial separation in a thermal mixture of ultracold174Yb and 87Rb atoms
F. Baumer, F. Munchow, A. Gorlitz, Stephen Maxwell, Paul S. Julienne, Eite Tiesinga
We report on the observation of unusually strong interactions in a thermal mixture of ultracold atoms which cause a significant modification of the spatial distribution. A mixture of 87Rb and 174Yb with a temperature of a few μK is prepared in a hybrid trap consisting of a bichromatic optical potential superimposed on a magnetic trap. For suitable trap parameters and temperatures, a spatial separation of the two species is observed. We infer that the separation is driven by a large interaction strength between 174Yb and 87Rb and a correspondingly large three-body recombination rate. A diffusion model of the spatial separation supports this conclusion.
, Munchow, F.
, Gorlitz, A.
, Maxwell, S.
, Julienne, P.
and Tiesinga, E.
Spatial separation in a thermal mixture of ultracold174Yb and 87Rb atoms, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.83.040702, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906262
(Accessed December 9, 2023)