Stable stripe and vortex solitons in two-dimensional spin-orbit coupled Bose-Einstein condensates  

作　　者：Yuan Guo Muhammad Idrees Ji Lin Hui-jun Li 

机构地区：[1]Institute of Nonlinear Physics and Department of Physics,Zhejiang Normal University,Jinhua 321004,China [2]Zhejiang Institute of Photoelectronics and Zhejiang Institute for Advanced Light Source,Zhejiang Normal University,Jinhua 321004,China

出　　处：《Communications in Theoretical Physics》2024年第6期26-33,共8页理论物理通讯（英文版）

基　　金：the Natural Science Foundation of Zhejiang Province of China(Grant No.LZ22A050002);the National Natural Science Foundation of China(Grant Nos.12074343 and 11835011);Muhammad Idrees acknowledges support from the postdoctoral fellowship of Zhejiang Normal University(Grant No.YS304123952).

摘　　要：We present a flexible manipulation and control of solitons via Bose-Einstein condensates.In the presence of Rashba spin-orbit coupling and repulsive interactions within a harmonic potential,our investigation reveals the numerical local solutions within the system.By manipulating the strength of repulsive interactions and adjusting spin-orbit coupling while maintaining a zero-frequency rotation,diverse soliton structures emerge within the system.These include plane-wave solitons,two distinct types of stripe solitons,and odd petal solitons with both single and double layers.The stability of these solitons is intricately dependent on the varying strength of spin-orbit coupling.Specifically,stripe solitons can maintain a stable existence within regions characterized by enhanced spin-orbit coupling while petal solitons are unable to sustain a stable existence under similar conditions.When rotational frequency is introduced to the system,solitons undergo a transition from stripe solitons to a vortex array characterized by a sustained rotation.The rotational directions of clockwise and counterclockwise are non-equivalent owing to spin-orbit coupling.As a result,the properties of vortex solitons exhibit significant variation and are capable of maintaining a stable existence in the presence of repulsive interactions.

关 键 词：Bose-Einstein condensate spin-orbit coupling rotation frequency stripe solitons vortex array 

分 类 号：O469[理学—凝聚态物理]