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arXiv 2104.02197cond-mat.quant-gas
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二维自旋轨道耦合自旋1凝聚体中的类超固态

Supersolid-like states in a two-dimensional trapped spin-orbit-coupled spin-1 condensate

S. K. Adhikari

摘要:

研究了准二维Rashba和Dresselhaus自旋轨道耦合凝聚体中的类超固态。对于小强度的SO耦合$γ$($γ\lessapprox 0.75$),在铁磁相中,形成圆对称的$(0,\pm 1, \pm 2)$ -和$(\mp 1, 0,\pm 1)$ -型状态,其中括号中的数字表示组件中心处的涡旋的角动量,并且其中上(下)符号对应于Rashba(Dresselhaus)耦合;在反铁磁相中,仅形成$(\mp 1, 0,\pm 1)$ -型状态。在大的SO耦合强度下,铁磁相中会形成类超固态的超晶格和超条纹态。在反铁磁相,由于SO耦合的强度较大,形成了超固态的超条态和多环态。对于Rashba和Dresselhaus SO耦合的等量混合物,只发现了一个超条纹态,所有这些态都是动态稳定的,因此可以在实验中获得,并将增强对固体中空间周期态结晶的基本理解。

英文摘要:

We study supersolid-like states in a quasi-two-dimensional trapped Rashba and Dresselhaus spin-orbit (SO) coupled spin-1 condensate. For small strengths of SO coupling $γ$ ($γ\lessapprox 0.75$), in the ferromagnetic phase, circularly-symmetric $(0,\pm 1, \pm 2)$- and $(\mp 1, 0,\pm 1)$-type states are formed where the numbers in the parentheses denote the angular momentum of the vortex at the center of the components and where the upper (lower) sign correspond to Rashba (Dresselhaus) coupling; in the antiferromagnetic phase, only $(\mp 1, 0,\pm 1)$-type states are formed. For large strengths of SO coupling, supersolid-like superlattice and superstripe states are formed in the ferromagnetic phase. In the antiferromagnetic phase, for large strengths of SO coupling, supersolid-like superstripe and multi-ring states are formed. For an equal mixture of Rashba and Dresselhaus SO couplings, only a superstripe state is found. All these states are found to be dynamically stable and hence accessible in an experiment and will enhance the fundamental understanding of crystallization onto spatially periodic states in solids.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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