  In type-II superconductors, where vortices and antivortices tend to
annihilate, only a "ferromagnetic" vortex lattice, with the same orientation of
vortex magnetic moments, is usually formed in a homogeneous external magnetic
field. Using the time-dependent Ginzburg-Landau formalism, we demonstrate that
a checkerboard vortex-antivortex lattice ("antiferromagnetic vortex lattice"),
imprinted onto a superconducting film by a periodic array of underlying
clockwise and counterclockwise microcoils generating spatially periodic
positive and negative magnetic field pulses and then trapped by an array of
artificial pinning centers, remains stable even after the imprinting magnetic
field pulse is switched off.
