Interacting Spin-Orbit-Coupled Spin-1 Bose-Einstein Condensates

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Interacting Spin-Orbit-Coupled Spin-1 Bose-Einstein Condensates

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Title: Interacting Spin-Orbit-Coupled Spin-1 Bose-Einstein Condensates
Author(s):
Sun, Kuei (UT Dallas);
Qu, Chunlei (UT Dallas);
Xu, Yong (UT Dallas);
Zhang, Y.;
Zhang, Chaunwei (UT Dallas)
Item Type: Article
Keywords: Show Keywords
Abstract: The recent experimental realization of spin-orbit (SO) coupling for spin-1 ultracold atoms opens an interesting avenue for exploring SO-coupling-related physics in large-spin systems, which is generally unattainable in electronic materials. In this paper, we study the effects of interactions between atoms on the ground states and collective excitations of SO-coupled spin-1 Bose-Einstein condensates (BECs) in the presence of a spin-tensor potential. We find that ferromagnetic interaction between atoms can induce a stripe phase exhibiting in-phase or out-of-phase modulating patterns between spin-tensor and zero-spin-component density waves. We characterize the phase transitions between different phases using the spin-tensor density as well as the collective dipole motion of the BEC. We show that there exists a double maxon-roton structure in the Bogoliubov-excitation spectrum, attributed to the three band minima of the SO-coupled spin-1 BEC.
Publisher: American Physical Society
ISSN: 1050-2947
Persistent Link: http://hdl.handle.net/10735.1/5076
http://dx.doi.org/10.1103/PhysRevA.93.023615
Bibliographic Citation: Sun, K., C. Qu, Y. Xu, Y. Zhang, et al. 2016. "Interacting spin-orbit-coupled spin-1 Bose-Einstein condensates." Physical Review A - Atomic, Molecular, and Optical Physics 93(2), doi:10.1103/PhysRevA.93.023615
Terms of Use: ©2016 American Physical Society
Sponsors: Supported by grants from ARO (W911NF-12-1-0334), AFOSR (FA9550-13-1-0045), and NSF (PHY-1505496).

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