Search Swinburne Research Bank
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/217421
 Download PDF (Published version) (Adobe Acrobat PDF, -1 bytes) |
- Title
- Half-quantum vortex state in a spin-orbit-coupled Bose-Einstein condensate
- Author(s)
- Ramachandhran, B.; Opanchuk, Bogdan; Liu, Xia-Ji; Pu, Han; Drummond, Peter D.; Hu, Hui
- Abstract
- We theoretically investigate the condensate state and collective excitations of a two-component Bose gas in a two-dimensional harmonic trap subject to isotropic Rashba spin-orbit coupling. In the weakly interacting regime when the interspecies interaction is larger than the intraspecies interaction (g↑↓>g), we find that the condensate ground state has a half-quantum angular momentum vortex configuration with spatial rotational symmetry and skyrmion-type spin texture. Upon increasing the interatomic interaction beyond a threshold gc, the ground state starts to involve higher-order angular momentum components and thus breaks rotational symmetry. In the case of g↑↓
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy
- Source
- Physical Review A: Atomic, Molecular, and Optical Physics, Vol. 85, no. 2 (Feb 2012), article no. 023606
- Publication year
- 2012
- FOR Code(s)
- 01 Mathematical Sciences; 02 Physical Sciences; 03 Chemical Sciences
- Keyword(s)
- Bose-Einstein condensates; Half-quantum vortex states; Spin-orbit coupling
- Publisher
- American Physical Society
- ISSN
- 1050-2947
- Publisher URL
- http://dx.doi.org/10.1103/PhysRevA.85.023606
- Copyright
- Copyright © 2012 American Physical Society. The published version is reproduced with the kind permission of the publisher.
- Research Projects
- Ultracold atomic Fermi gases in the strongly interacting regime: a new frontier of quantum many-body physics, Australian Research Council grant number DP0984522
Imbalanced superfluidity: the quantum mystery that defies solution, Australian Research Project grant number DP0984637
Dynamics and correlations of many-body systems, Australian Research Council grant number DP0880404
- Full text
- Peer reviewed
