Optical-lattice-assisted magnetic phase transition in a spin-orbit-coupled Bose-Einstein condensate

Giovanni I. Martone, Tomoki Ozawa, Chunlei Qu, Sandro Stringari

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We investigate the effect of a periodic potential generated by a one-dimensional optical lattice on the magnetic properties of an S=1/2 spin-orbit-coupled Bose gas. By increasing the lattice strength one can achieve a magnetic phase transition between a polarized and an unpolarized Bloch wave phase, characterized by a significant enhancement of the contrast of the density fringes. If the wave vector of the periodic potential is chosen close to the roton momentum, the transition could take place at very small lattice intensities, revealing the strong enhancement of the response of the system to a weak density perturbation. By solving the Gross-Pitaevskii equation in the presence of a three-dimensional trapping potential, we shed light on the possibility of observing the magnetic phase transition in currently available experimental conditions.

Original languageEnglish
Article number043629
JournalPhysical Review A
Volume94
Issue number4
DOIs
Publication statusPublished - 2016 Oct 14
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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