Excitations of a Binary Dipolar Supersolid,Physical Review Letters

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Excitations of a Binary Dipolar Supersolid
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-09-04 , DOI: 10.1103/physrevlett.133.103401
W. Kirkby ₁ , Au-Chen Lee _{2,

3} , D. Baillie _{2,

3} , T. Bland ₁ , F. Ferlaino _{1,

4} , P. B. Blakie _{2,

3} , R. N. Bisset ₁

Affiliation

We predict a rich excitation spectrum of a binary dipolar supersolid in a linear crystal geometry, where the ground state consists of two partially immiscible components with alternating, interlocking domains. We identify three Goldstone branches, each with first-sound, second-sound, or spin-sound character. In analogy with a diatomic crystal, the resulting lattice has a two-domain primitive basis and we find that the crystal (first-sound-like) branch is split into optical and acoustic phonons. We also find a spin-Higgs branch that is associated with the supersolid modulation amplitude.

中文翻译：

二元偶极超固体的激发

我们预测线性晶体几何结构中二元偶极超固体的丰富激发光谱，其中基态由两个具有交替互锁域的部分不混溶组分组成。我们确定了三个戈德斯通分支，每个分支都有第一音、第二音或旋转音特征。与双原子晶体类似，所得晶格具有双域原始基础，我们发现晶体（第一声音）分支分裂为光学和声学声子。我们还发现了与超固体调制幅度相关的自旋希格斯分支。

更新日期：2024-09-05

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