Dynamics of vortex lattice formation in rotating two-component Bose-Einstein condensates

We study the dynamics of rotating two-component Bose-Einstein condensates(BECs) toward vortex lattice formation by numerically solving the two-dimensional Gross-Pitaevskii equations. The dynamics are similar to that of single-component BEC, and the whole changes of physical quantities in two cases are qualitatively similar. However, there are some differences between two cases. First, the characteristic time toward vortex entering depends on the inter-component interaction. The time toward vortex entering becomes shorter with increasing the inter-component interaction. Second, the angular momenta exchange between two components with keeping the total angular momentum.