论文标题
通用量子自旋冰中新兴光子的超声检测
Ultrasound detection of emergent photons in generic quantum spin ice
论文作者
论文摘要
量子自旋冰（QSI）的实验性鉴定是pyrochlore晶格托管新兴光子上的量子旋转液体，是沮丧的磁铁中的一个主要挑战。在这项工作中，我们提出了超声测量作为探测各种QSI相的新兴光子的新工具。我们的分析包括QSI阶段，包括$ \ rm {pr} _2 \ rm {zr} _2 \ rm {o} _7 $，以及dipolar-octupolar kramers doublet doublet Compounds，例如$ \ rm \ rm {zr { \ rm {o} _7 $。后者可能会容纳与八度分量相关的新兴光子，从而使它们难以通过非弹性中子散射来检测到它们。我们从理论上说明了如何从声子频谱的重新归一化中获得新出现光子的速度，并表明超声测量提供了一种将偶极与二极极八光线性材料中的二色QSI相区分的方法。
Experimental identification of quantum spin ice (QSI), a U(1) quantum spin liquid on the pyrochlore lattice hosting emergent photons, is a major challenge in frustrated magnets. In this work, we propose ultrasound measurements as a novel tool for probing the emergent photons of various QSI phases. Our analysis includes QSI phases in non-Kramers doublet compounds such as $\rm{Pr}_2 \rm{Zr}_2 \rm{O}_7$ as well as dipolar-octupolar Kramers doublet compounds such as $\rm{Ce}_2 \rm{Zr}_2 \rm{O}_7$. The latter may host emergent photons associated with an octupolar component which renders them difficult to detect with inelastic neutron scattering. We demonstrate theoretically how the speed of the emergent photons can be obtained from the renormalization of the phonon spectrum and show that ultrasound measurements provide a means of distinguishing the dipolar from the octupolar QSI phase in dipolar-octupolar materials.
