Charged vortices in superfluid systems with pairing of spatially separated carriers

It is shown that in a magnetic field the vortices in superfluid electron-hole systems carry a real electrical charge. The charge value depends on the relation between the magnetic length l(B) and the Bohr radius of electrons a(B)(e) and holes a(B)(h). In double-layer systems at filling factors nu(e)=nu(h)=nu and for a(B)(e),a(B)(h)>l(B) the vortex charge is equal to the universal value nue.