On the possibility of the propagation of solitary electromagnetic waves in bigraphene

The possibility of the propagation of a solitary electromagnetic wave in bigraphene, between the layers of which a potential difference is applied, is studied. The condition is found under which the formation of such a wave is possible. The dependence of the solitary-wave shape on the potential difference between graphene layers is studied. As possible solitary-wave identification, the electric charge carried away by the wave in the direction of its propagation is calculated.