Spin-orbital liquid in Ba3CuSb2O9 stabilized by oxygen holes
Spin-orbital liquid in Ba3CuSb2O9 stabilized by oxygen holes
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氧空穴稳定的 Ba3CuSb2O9 中的自旋轨道液体
DOI：
10.1103/physrevmaterials.5.075002
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发表时间：
2021
影响因子：
3.4
通讯作者：
Khomskii Daniel I.
中科院分区：
文献类型：
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作者：
Takubo Kou;Man Huiyuan;Nakatsuji Satoru;Yamamoto Kohei;Zhang Yujun;Hirata Yasuyuki;Wadati Hiroki;Yasui Akira;Mizokawa Takashi;Khomskii Daniel I.
本文报道了六方萘的x射线和光吸收光谱以及硬x射线光发射光谱，由于八面体的Jahn-Teller畸变和磁有序的存在，六方萘可能是cuspin轨道液态。实验结果及其聚类模型分析表明，小孔在六方体自旋轨道液态的实现中起着至关重要的作用。这些氧孔的出现是由于两个ohole的“反应”，这些孔能够附着在Cu离子上。本研究为研究具有小电荷转移能或负电荷转移能的过渡金属氧化物的自旋-电荷-轨道纠缠态开辟了道路。
We report x-ray and optical absorption spectroscopy as well as hard x-ray photoemission spectroscopy on hexagonalin which a Cuspin-orbital liquid state is suggested from absence of the Jahn-Teller distortion ofoctahedra and of the magnetic ordering. The experimental results and their cluster model analysis indicate that Oholes play a crucial role in realizing the spin-orbital liquid state of hexagonal. These oxygen holes appear due to the “reaction”two Oholes, with these holes being able to attach to Cu ions. The present work opens avenues towards spin-charge-orbital entangled liquid state in transition-metal oxides with small or negative charge transfer energy.