Stripe and supersolid phases of spin-orbit coupled spin-2 Bose-Einstein condensates in an optical lattice
Stripe and supersolid phases of spin-orbit coupled spin-2 Bose-Einstein condensates in an optical lattice
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光学晶格中自旋轨道耦合的自旋 2 玻色-爱因斯坦凝聚体的条带相和超固相
DOI：
10.1088/1361-648x/ab468d
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Yang Shi-Jie
中科院分区：
文献类型：
--
作者：
Wang Ji-Guo;Yang Shi-Jie
研究了一维自旋依赖光学晶格中二维自旋-轨道耦合自旋-2玻色-爱因斯坦凝聚体的基态相。由于光学晶格、自旋轨道耦合和自旋交换相互作用的竞争，发现了奇异的基态相，即三种类型的条纹相和三种类型的超固相。自旋交换相互作用可以调节条纹相中条纹的方向，并在超固相中产生各种涡旋晶格结构，这表明自旋交换相互作用在光学晶格中自旋-轨道耦合自旋-2玻色-爱因斯坦凝聚体的条纹相和超固相的形成中起着重要作用。
We study the ground-state phases of two-dimensional spin–orbit coupled spin-2 Bose–Einstein condensates in a one-dimensional spin-dependent optical lattice. Due to the competition among optical lattice, spin–orbit coupling and spin-exchange interaction, the exotic ground-state phases are found, ie three types of the stripe phases and three types of the supersolid phases. The spin-exchange interaction can adjust the direction of the stripe in the stripe phase and generate various vortex lattice structures in the supersolid phase, which shows that the spin-exchange interaction plays an important role in the formation of the stripe and supersolid phases of spin–orbit coupled spin-2 Bose–Einstein condensates in an optical lattice.