Phase separation and vortex states in binary mixture of Bose-Einstein condensates

Abstract

The phase separation and vortex states in two-component Bose-Einstein condensate consisting of $|F=1,m_f=-1>$ and $|2,1>$ internal spin states of ${}^{87}Rb$ atoms are considered in the framework of Thomas-Fermi approximation. It is shown that in nonrotating system the atoms in the state $|1,-1>$ form a shell about the atoms in the state $|2,1>$. The critical angular velocity for each state is calculated. These velocities are drastically dependent on the mutual concentrations of the components, the critical angular velocity of the outer component being less than the angular velocity of the inner one. It is shown that the atoms in the $|1,-1>$ state can form a rotating ring about the resting core of the atoms in the state $|2,1>$.

16 Latex pages, 2 figures

References in corpus (3)

• Vortex formation in a stirred Bose-Einstein condensate
• Vortices in a Bose-Einstein Condensate
• Preparing Topological States of a Bose-Einstein Condensate

Cited by in corpus (5)

• Interface Tension of Bose-Einstein Condensates
• Coreless vorticity in multicomponent Bose and Fermi superfluids
• Vortex state in Bose-Fermi mixture with attraction between bosons and fermions
• Density profiles of two-component Bose-Einstein condensates interacting with a Laguerre-Gaussian Beam
• Effective Hamiltonian study of excitations in a boson- fermion mixture with attraction between components