The in-plane gradient magnetic field induced vortex lattices in spin-orbit coupled Bose-Einstein condensations
Abstract
We consider the ground-state properties of the two-component spin-orbit coupled ultracold bosons subject to a rotationally symmetric in-plane gradient magnetic field. In the non-interacting case, the ground state supports giant-vortices carrying large angular momenta without rotating the trap. The vorticity is highly tunable by varying the amplitudes and orientations of the magnetic field. Interactions drive the system from a giant-vortex state to various configurations of vortex lattice states along a ring. Vortices exhibit ellipse-shaped envelops with the major and minor axes determined by the spin-orbit coupling and healing lengths, respectively. Phase diagrams of vortex lattice configurations are constructed and their stabilities are analyzed.
Keywords
Cite
@article{arxiv.1411.7584,
title = {The in-plane gradient magnetic field induced vortex lattices in spin-orbit coupled Bose-Einstein condensations},
author = {Xiang-Fa Zhou and Zheng-Wei Zhou and Congjun Wu and Guang-Can Guo},
journal= {arXiv preprint arXiv:1411.7584},
year = {2015}
}
Comments
9 pages, 8 figures, submitted to PRA