title: Exact soliton-on-plane-wave solutions for two-component Bose-Einstein condensates.
abstract: By means of the Darboux transformation, we obtain analytical solutions for a soliton set on top of a plane-wave background in coupled Gross-Pitaevskii equations describing a binary Bose-Einstein condensate. We consider basic properties of the solutions with and without the cross interaction [cross phase modulation (XPM)] between the two components of the background. In the absence of the XPM, this solutions maintain properties of one-component condensates, such as the modulation instability (MI); in the presence of the cross interaction, the solutions exhibit different properties, such as restriction of the MI and soliton splitting.
authors.affiliation: College of Physics and Electronics Engineering, Shanxi University, Taiyuan, 030006, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Li
authors.forename: Boris A
authors.initials: BA
authors.lastname: Malomed
authors.forename: Dumitru
authors.initials: D
authors.lastname: Mihalache
authors.forename: W M
authors.initials: WM
authors.lastname: Liu