AI 中文总结
通过金刚石对顶砧内的拉曼光谱研究，发现量子自旋液体候选材料Na2Co2TeO6在最高16.3 GPa压力下存在压力诱导相变，其压力范围可分为三个区域。
AI 中文摘要
准二维磁体Na2Co2TeO6（NCTO）是Kitaev量子自旋液体（KQSL）态的候选材料。这类材料的压力调控作为调节Kitaev交换相互作用的潜在方法受到关注，而Kitaev交换与键几何密切相关。本文报道了金刚石对顶砧（DAC）内对NCTO开展的拉曼光谱研究，施加压力最高达16.3 GPa。基于拉曼模式的变化，该压力范围被划分为三个区域。多个模式的出现与消失，以及代表性模式偏振依赖关系的变化（尤其在13.8 GPa以上），表明该材料存在压力诱导的相变。
英文摘要
The quasi-2D magnet Na2Co2TeO6 (NCTO) is a candidate for a Kitaev Quantum Spin Liquid (KQSL) state. Pressure-tuning in such materials is of interest as a potential method to tune the Kitaev exchange interactions, which are strongly dependent on bond geometry. Here we report a Raman spectroscopic study of NCTO inside a diamond anvil cell (DAC) with pressure applied up to 16.3 GPa. Based on the changes in the Raman modes, this pressure range is divided into three regions. The appearance and disappearance of several modes and changes in the polarization dependence of the representative modes, most prominently above 13.8 GPa, point to pressure-induced phase transitions in this material.
CommentsSupplementary materials available upon request
