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

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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.

Bose-Einstein condensatespin-orbit couplingrotation frequencystripe solitonsvortex array

Yuan Guo、Muhammad Idrees、Ji Lin、Hui-jun Li

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Institute of Nonlinear Physics and Department of Physics,Zhejiang Normal University,Jinhua 321004,China

Zhejiang Institute of Photoelectronics and Zhejiang Institute for Advanced Light Source,Zhejiang Normal University,Jinhua 321004,China

Natural Science Foundation of Zhejiang Province of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaMuhammad Idrees acknowledges support from the postdoctoral fellowship of Zhejiang Normal University

LZ22A0500021207434311835011YS304123952

2024

10.1088/1572-9494/ad3e66

理论物理通讯(英文版)
中国科学院理论物理研究所 中国物理学会

理论物理通讯(英文版)

CSTPCD
影响因子：0.333
ISSN：0253-6102
年,卷(期)：2024.76(6)