Vibronic order and emergent magnetism in cubic $d^1$ double perovskites
Vibronic order and emergent magnetism in cubic $d^1$ double perovskites
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DOI：
10.1103/physrevb.107.l220404
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发表时间：
2022-11
影响因子：
3.7
通讯作者：
Naoya Iwahara;L. Chibotaru
中科院分区：
文献类型：
--
作者：
Naoya Iwahara;L. Chibotaru
材料中不同相互作用的协同相互作用导致了新的量子现象的出现。自旋-轨道耦合和电子振动耦合通常相互抵消，然而，在立方d^1 $双钙钛矿中，它们共存并引起自旋-轨道-晶格纠缠，在金属位点上具有未猝灭的动态Jahn-Teller效应。到目前为止，还没有评估这些纠缠态之间的相互作用引起的相关性。在这里，我们调查的联合合作效应的自旋轨道和振动相互作用的有序相的形成$d^1$双钙钛矿。我们发现，在这些系统中的磁有序状态共存的动态振动四极矩的网站上的有序的特点。这种处理允许合理化的实验研究阶段的一些无法解释的功能。
The synergistic interplay of different interactions in materials leads to the emergence of novel quantum phenomena. Spin-orbit and vibronic couplings usually counteract each other, however, in cubic $d^1$ double perovskites they coexist and give rise to spin-orbit-lattice entanglement with unquenched dynamic Jahn-Teller effect on the metal sites. The correlation of these entangled states induced by intersite interactions was not assessed so far. Here, we investigate the joint cooperative effect of spin-orbit and vibronic interactions on the formation of the ordered phases in $d^1$ double perovskites. We found that the magnetic ordered states in these systems coexist with a dynamic vibronic order characterized by the ordering of vibronic quadrupole moments on sites. This treatment allows the rationalization of a number of unexplained features of experimentally investigated phases.