1. Probing the Interface of a Phase-Separated State in a Repulsive Bose-Fermi Mixture.
- Author
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Lous, Rianne S., Fritsche, Isabella, Jag, Michael, Lehmann, Fabian, Kirilov, Emil, Bo Huang, and Grimm, Rudolf
- Subjects
- *
BOSE-Einstein condensation , *PHASE separation , *MEAN field models (Statistical physics) - Abstract
We probe the interface between a phase-separated Bose-Fermi mixture consisting of a small Bose-Einstein condensate of 41K residing in a large Fermi sea of 6Li. We quantify the residual spatial overlap between the two components by measuring three-body recombination losses for variable strength of the interspecies repulsion. A comparison with a numerical mean-field model highlights the importance of the kinetic energy term for the condensed bosons in maintaining the thin interface far into the phase-separated regime. Our results demonstrate a corresponding smoothing of the phase transition in a system of finite size. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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