  We propose a hole-induced mechanism of spin-polarized current generation by
circularly polarized synchrotron radiation and corresponding induced
magnetization in magnetically-doped topological insulators
Bi$_{1.37}$V$_{0.03}$Sb$_{0.6}$Te$_2$Se. Considered spin-polarized current is
generated due to the spin-dependent depopulation of the Dirac cone topological
surface states at the Fermi level and subsequent compensation of the generated
holes. We have found experimentally and theoretically a relation between the
generated spin-polarized current and the shift of the electrochemical
potential. The out-of-plane magnetization induced by circularly polarized
synchrotron radiation and its inversion with switching the direction of
circular polarization were experimentally shown and theoretically confirmed.
