  It has been commonly accepted that magnetic field suppresses
superconductivity by inducing the ordered motion of Cooper pairs. We
demonstrate that magnetic field can instead provide a generation of
superconducting correlations by inducing the motion of superconducting
condensate. This effect arises in superconductor/ferromagnet heterostructures
in the presence of Rashba spin-orbital coupling. We predict the odd-frequency
spin-triplet superconducting correlations called the Berezinskii order to be
switched on at large distances from the superconductor/ferromagnet interface by
the application of a magnetic field. This is shown to result in the unusual
behaviour of Josephson effect and local density of states in
superconductor/ferromagnet structures.
