Composite localized modes in discretized spin–orbit-coupled Bose–Einstein condensates. (20th February 2015)

• Record Type: Journal Article
• Authors: Beličev, Petra P; Gligorić, Goran; Petrovic, Jovana; Maluckov, Aleksandra; Hadžievski, Ljupčo; Malomed, Boris A
• Is Part Of: Journal of physics. Volume 48:Number 6(2015:Mar. 15)
• Publication Date: 2015-02-20
• Subjects: spin–orbit coupling -- two component BEC -- miscibility–immiscibility transition -- discrete soliton complexes; 05.45.Yv -- 03.75.Lm -- 03.75.Mn; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/0953-4075/48/6/065301
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We introduce a discrete model for binary spin–orbit-coupled Bose–Einstein condensates trapped in a deep one-dimensional optical lattice. Two different types of the couplings are considered, with spatial derivatives acting inside each species, or between the species. The discrete system with inter-site couplings dominated by the spin–orbit coupling (SOC), while the usual hopping is negligible, emulates condensates composed of extremely heavy atoms, as well as those with opposite signs of the effective atomic masses in the two components. Stable localized composite states of miscible and immiscible types are constructed. The effect of the SOC on the immiscibility–miscibility transition in the localized complexes, which emulates the phase transition between insulating and conducting states in semiconductors, is studied.