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Bulletin of the American Physical Society

Phase Separation and Dynamics of Trapped Two-component Bose-Einstein condensates

Nick P. Proukakis, KL Lee, Matthew Edmonds, I-K Liu, N. H. Feilberg Jørgensen, L. J. Wacker, JJ Arlt

Published May 25, 2016• 0 citations
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We numerically study the dynamics of quantized vortices in two-dimensional two-component Bose-Einstein condensates (BECs) trapped by a box potential. For one-component BECs in a box potential, it is known that quantized vortices form Onsager vortices, which are clusters of same-sign vortices. We confirm that the vortices of the two components spatially separate from each other-even for miscible two-component BECs-suppressing the formation of Onsager vortices. This phenomenon is caused by the repulsive interaction between vortices belonging to different components, hence, suggesting a new possibility for vortex phase separation.