The role of the exchange and magnetic dipole interactions in the superconductors with helical magnetic ordering

Abstract The helical ordering of localized moments in the magnetic superconductors is considered by taking into account the exchange interaction of localized moments and electrons as well as their interaction via the magnetic field. We show that the structure of superconducting phase with helical magnetic order is determined mainly by the exchange interaction. The magnetic dipole interaction fixes only the direction of the helix wave vector so that it is transverse.