Angular stripe phase in spin-orbital-angular-momentum coupled Bose condensates

Angular stripe phase in spin-orbital-angular-momentum coupled Bose condensates
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自旋轨道角动量耦合玻色凝聚中的角条纹相位

DOI:
10.1103/physrevresearch.2.033152
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发表时间:
2019-01
影响因子:
4.2
通讯作者:
Hui Hu
Hui Hu
中科院分区:
--
文献类型:
--
作者:
Xiao-Long Chen;Shi-Guo Peng;Peng Zou;Xia-Ji Liu;Hui Hu

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我们提出在自旋-轨道-角动量耦合的二维自旋-1/2玻色气体中可以实现具有超固体性质的新型超流体——角条纹相。我们预测了一个丰富的基态相图,包括涡旋-反涡旋对相、半斯基米子相和两个不同角度的条纹相。条纹相位具有调制的角密度-密度相关,具有较大的对比度,可以占据较大的参数空间。偶极子和呼吸模式等低洼集体激励在不同阶段表现出不同的行为。在相变附近的集体模的能量和动力不稳定性中也清楚地表明了新角度条纹相的存在。我们对角条纹相的预测可以很容易地在当前的冷原子实验中用$^{87}$Rb进行检验。
We propose that novel superfluid with supersolid-like properties - angular stripe phase - can be realized in a two-dimensional spin-1/2 Bose gas with spin-orbital-angular-momentum coupling. We predict a rich ground-state phase diagram, including the vortex-antivortex pair phase, half-skyrmion phase, and two different angular stripe phases. The stripe phases feature modulated angular density-density correlation with sizable contrast and can occupy a relatively large parameter space. The low-lying collective excitations, such as the dipole and breathing modes, show distinct behaviors in different phases. The existence of the novel angular stripe phase is also clearly indicated in the energetic and dynamic instabilities of collective modes near phase transitions. Our predictions of the angular stripe phase could be readily examined in current cold-atom experiments with $^{87}$Rb.
DOI: --
发表时间: 2017-06
期刊: Bulletin of the American Physical Society
影响因子: --
作者:
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通讯作者: Jun-Ru Li;Jeongwon Lee;Wujie Huang;Sean Burchesky;B. Shteynas;F. C. Top;A. Jamison;W. Ketterle
自旋轨道角动量耦合玻色爱因斯坦凝聚体的基态相图
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影响因子: 2.9
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通讯作者: M. Demarco;H. Pu