论文标题
Hyperhoneycomb Kitaev旋转液体中的声音衰减
Sound attenuation in the hyperhoneycomb Kitaev spin liquid
论文作者
论文摘要
近年来，已经表明，声子动力学可以作为自由度自由度分离的间接探测。在这里，我们提出，声音衰减测量值可以在HyperHoneyComb晶格上表征和鉴定Kitaev量子旋转液体，这特别有趣，因为在HyperHoneyComb Magnet $β$β$ -LI $ -LI $ _2 $ _2 $ IRO iro iro $ $ _3 $中观察到了强大的Kitaev相互作用。为此，我们考虑了具有节点线带结构的声音子和无间隙的Majorana fermions之间的低温散射。我们发现，声音衰减具有特征性的角度依赖性，在磁通间隙能量以下的温度下，高对称平面明确显示了这一依赖性。
In recent years, it has been shown that the phonon dynamics may serve as an indirect probe of fractionalization of spin degrees of freedom. Here we propose that the sound attenuation measurements allows for the characterization and identification of the Kitaev quantum spin liquid on the hyperhoneycomb lattice, which is particularly interesting since the strong Kitaev interaction was observed in the the hyperhoneycomb magnet $β$-Li$_2$IrO$_3$. To this end we consider the low-temperature scattering between acoustic phonons and gapless Majorana fermions with nodal-line band structure. We find that the sound attenuation has a characteristic angular dependence, which is explicitly shown for the high-symmetry planes at temperatures below the flux gap energy.
