Li, GQ (reprint author), Xi An Jiao Tong Univ, Dept Appl Phys, Xian 710049, Shaanxi, Peoples R China.
; Li, GQ (reprint author), Xi An Jiao Tong Univ, Key Lab Quantum Informat & Quantum Optoelect Devi, Xian 710049, Shaanxi, Peoples R China.
; Li, GQ (reprint author), Shaanxi Univ Sci & Technol, Sch Arts & Sci, Xian 710021, Shaanxi, Peoples R China.
文章类型:
Article
英文摘要:
We investigate the modulation instability (MI) of plane-wave states in a spin-orbit-coupled spin-1 Bose-Einstein condensate (BEC). The MI of the system can be adjusted by the intensities of the spin-orbit coupling (SOC), Raman coupling and atom-atom interactions. Our analysis shows that the MI of a system without the SOC and Raman coupling mainly occurs for repulsive density-density and spin-exchange interactions due to the combined effects coming from both of them. But when considering the SOC, a multi-peak structure appears in the momentum distribution for the instability, which may be thought of as a precursor to the generation of the stripe-type nonlinear excitations in such systems. The MI becomes more remarkable with increasing intensity of Raman coupling. In addition, the SOC inevitably contributes to the instability for the ternary superfluid regardless of the nature of the density-density and spin-exchange interactions.
类目[WOS]:
Optics
; Physics, Atomic, Molecular & Chemical
关键词[WOS]:
GASES
; DYNAMICS
项目资助者:
National Natural Science Foundation of China [11405100, 11704132]
; Natural Science Basic Research Plan in Shaanxi Province of China [2015JM1032]
Li, GQ,Chen, GD,Peng, P,et al. Modulation instability of a spin-1 Bose-Einstein condensate with spin-orbit coupling[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2017,50(23):235302.
