论文标题
双层蜂窝磁铁中三倍的扭曲的超氟和超固体阶段
Twisted superfluid and supersolid phases of triplons in bilayer honeycomb magnets
论文作者
论文摘要
我们证明,双层海森贝格防铁磁铁中的低洼三倍激发为实现扭曲的超氟和超氧相似的磁性类似物提供了有希望的途径,这些磁性类似物最近报道了两种成分的超速原子凝管在光学晶格中。使用簇gutzwiller平均场理论,我们确定在许多量子磁体中常见的dzyaloshinskii-moriya相互作用(DMI)在磁系统中稳定了这些相,而与超质原子所必需的对跳跃过程相反。 DMI过渡到扭曲的超流体和扭曲的超固体相的临界值取决于(沮丧的)层间相互作用的强度,这些相互作用可以通过在层之间施加外部压力和 /或剪切力来调节。此外,我们表明DMI的强度可以通过与量身定制的圆形光线耦合来控制。我们的结果为对实际量子磁体中三重曲子的扭曲超丝和超固相的实验搜索提供了至关重要的指导。
We demonstrate that low-lying triplon excitations in a bilayer Heisenberg antiferromagnet provide a promising avenue to realize magnetic analogs of twisted superfluid and supersolid phases that were recently reported for two-component ultracold atomic condensate in an optical lattice. Using a cluster Gutzwiller mean-field theory, we establish that Dzyaloshinskii-Moriya interactions (DMI), that are common in many quantum magnets, stabilize these phases in a magnetic system, in contrast to the pair hopping process that is necessary for ultracold atoms. The critical value of DMI for transition to the twisted superfluid and twisted supersolid phases depends on the strength of the (frustrated) interlayer interactions that can be tuned by applying external pressure on and / or shearing force between the layers. Furthermore, we show that the strength of DMI can be controllably varied by coupling to tailored circularly polarized light. Our results provide crucial guidance for the experimental search of twisted superfluid and supersolid phases of triplons in real quantum magnets.