Phase separation and exotic vortex phases in a two-species holographic superfluid Wei-Can Yang, Chuan-Yin Xia, Hua-Bi Zeng and Hai-Qing Zhang Eur. Phys. J. C, 81 1 (2021) 21 Published online: 13 January 2021 DOI: 10.1140/epjc/s10052-021-08838-x