Phase separation of a fast rotating boson-fermion mixture in the lowest-Landau-level regime.
By minimizing the coupled mean-field energy functionals, we investigate the ground-state properties of a rotating atomic boson-fermion mixture in a two-dimensional parabolic trap. At high angular frequencies in the mean-field lowest-Landau-level regime, quantized vortices enter the bosonic condensate, and a finite number of degenerate fermions form the maximum-density-droplet state. As the boson-fermion coupling constant increases, the maximum density droplet develops into a lower-density state associated with the phase separation, revealing characteristics of a Landau-level structure.
Kanamoto
Rina
R
Department of Physics, Osaka City University, Osaka 558-8585, Japan.
Tsubota
Makoto
M