Theory of magnetostriction for multipolar quantum spin ice in pyrochlore materials
Theory of magnetostriction for multipolar quantum spin ice in pyrochlore materials
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DOI：
10.1103/physrevresearch.2.033015
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发表时间：
2020-07-02
影响因子：
4.2
通讯作者：
Kim, Yong Baek
中科院分区：
文献类型：
--
作者：
Patri, Adarsh S.;Hosoi, Masashi;Kim, Yong Baek
多极磁性是量子材料研究的一个新兴领域。多极现象的组成部分是具有非克莱默双峰的磁性离子，其中轨道和自旋自由度不可避免地交织在一起，导致不寻常的自旋轨道纠缠态。然而，由于适当的实验工具数量有限，检测这种微妙形式的物质一直很困难。在这项工作中，受最近对 Pr2Zr2O7 磁致伸缩实验的启发，我们从理论上研究了如何使用磁致伸缩来检测多极量子自旋冰（一种难以捉摸的三维量子自旋液体），通过检查其磁场下降多极 kagome 冰相的特征特征，以及烧绿石材料中相邻多极有序相的特征特征。我们提供基于非克莱默和克莱默磁性离子的经典和/或量子研究的理论结果，并对比两个系统中不同相的行为。我们的工作为未来识别多极系统中的奇异基态铺平了重要途径。
Multipolar magnetism is an emerging field of quantum materials research. The building blocks of multipolar phenomena are magnetic ions with a non-Kramers doublet, where the orbital and spin degrees of freedom are inextricably intertwined, leading to unusual spin-orbital entangled states. The detection of such subtle forms of matter has, however, been difficult due to a limited number of appropriate experimental tools. In this work, motivated by a recent magnetostriction experiment on Pr2Zr2O7, we theoretically investigate how multipolar quantum spin ice, an elusive three-dimensional quantum spin liquid, can be detected using magnetostriction, by examining the characteristic signatures of its magnetic-field descendent multipolar kagome ice phase, as well as that of the neighboring multipolar ordered phases in the pyrochlore materials. We provide theoretical results based on classical and/or quantum studies of non-Kramers and Kramers magnetic ions, and contrast the behaviors of distinct phases in both systems. Our work paves an important avenue for future identification of exotic ground states in multipolar systems.