Quantum interference mechanism of the stripe-phase ordering

A microscopic mechanism of the multimode spin-charge ordering ("stripe phase") in the weakly coupled repulsive quasi-one-dimensional electron system is found. As a consequence, a new phase is predicted that is composed of the long wavelength charge density wave (CDW) with the wave vector 2 epsilon mediating between the two umklapp-related incommensurate spin density waves (SDWs) with the wave vectors Q(AF) +/- epsilon. Here, Q(AF) is a commensurate antiferromagnetic wave vector, and epsilon measures a deviation from the half-filling of the bare conduction band. Relationship with the stripe phases observed in cuprates and nickelates is discussed.