



@article {1301,
	title = {Spatial separation in a thermal mixture of ultracold $^{174}$Yb and  $^{87}$Rb atoms
},
	journal = {Physical Review A},
	volume = {83},
	year = {2011},
	month = {2011/4/21},
	abstract = {  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 $^{87}$Rb and $^{174}$Yb with a temperature
of a few $\mu$K 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
$^{174}$Yb and $^{87}$Rb accompanied by a large three-body recombination rate.
Based on this assumption we have developed a diffusion model which reproduces
our observations.
},
	doi = {10.1103/PhysRevA.83.040702},
	url = {http://arxiv.org/abs/1104.1722v1},
	author = {Florian Baumer and Frank M{\"u}nchow and Axel G{\"o}rlitz and Stephen E. Maxwell and Paul S. Julienne and Eite Tiesinga}
}
