Ostrovskaya, ElenaKivshar, Yuri2009-09-232010-12-202009-09-232010-12-20Physical Review Letters 92.18 (2004): 180405/1-40031-90071079-7114http://hdl.handle.net/10440/923http://digitalcollections.anu.edu.au/handle/10440/923We study nonlinear localization of a two-component Bose-Einstein condensate (BEC) in a one-dimensional optical lattice. Our theory shows that spin-dependent optical lattices can be used to effectively manipulate the nonlinear interactions between the BEC components, and to observe composite localized states of a BEC in both bands and gaps of the matter-wave spectrum.4 pagesThe author has the right to deposit the final version or the APS-prepared version on the ANU institutional repository as long the author was employed by the ANU when the paper was published and the repository is for the ANU Canberra campus only, not joint with other universities or other entities. (Email from APS, Publications Marketing Coordinator, 30/7/09). Copyright statement: ©2004 The American Physical SocietyKeywords: Anisotropy; Boundary conditions; Condensation; Crystal lattices; Electromagnetic wave diffraction; Energy gap; Light scattering; Nonlinear optics; Optical waveguides; Photons; Resonance; Solitons; Bloch waves; Bose-Einstein condensates (BEC); Coherent mat2004-05-0710.1103/PhysRevLett.92.1804052015-12-11