Generating ring dark solitons in two-component Bose–Einstein condensates

• Different numbers of ring dark (gray) solitons are generated simultaneously in two components.
• We discuss effect of intercomponent interaction and different initial component populations on ring dark solitons.
• Ring dark solitons have large superfluid velocities and zero superfluid currents at phase jump points.
• Ring gray solitons have large superfluid velocities and large superfluid currents at phase jump points.

The dynamical evolution of two-component Bose–Einstein condensates trapped in cylindrical well is numerically investigated by solving the coupled Gross–Pitaevskii equations. We illustrate that, due to intercomponent interaction and different initial component populations (n1