TY - JOUR
T1 - Optical-lattice-assisted magnetic phase transition in a spin-orbit-coupled Bose-Einstein condensate
AU - Martone, Giovanni I.
AU - Ozawa, Tomoki
AU - Qu, Chunlei
AU - Stringari, Sandro
N1 - Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/10/14
Y1 - 2016/10/14
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevA.94.043629
DO - 10.1103/PhysRevA.94.043629
M3 - Article
AN - SCOPUS:84991571930
SN - 2469-9926
VL - 94
JO - Physical Review A
JF - Physical Review A
IS - 4
M1 - 043629
ER -