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arXiv 2409.04062cond-mat.str-elcond-mat.mtrl-sci
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过渡金属氧化物SrRuO₃中的关联配体电子

Correlated Ligand Electrons in the Transition-Metal Oxide SrRuO$_3$

Yuichi Seki, Yuki K. Wakabayashi, Takahito Takeda, Kohdai Inagaki, Shin-ichi Fujimori, Yukiharu Takeda, Atsushi Fujimori, Yoshitaka Taniyasu, Hideki Yamamoto, Y… 展开作者

Yuichi Seki, Yuki K. Wakabayashi, Takahito Takeda, Kohdai Inagaki, Shin-ichi Fujimori, Yukiharu Takeda, Atsushi Fujimori, Yoshitaka Taniyasu, Hideki Yamamoto, Yoshiharu Krockenberger, Masaaki Tanaka, Masaki Kobayashi

AI总结:

本文利用共振光电子能谱研究SrRuO₃中Ru 4d和O 2p部分态密度,发现O 2p PDOS畸变大于Ru 4d,揭示配体p电子关联对理解p-d杂化电子结构的重要性。

摘要:

在过渡金属化合物中,过渡金属d电子对其物理性质起着重要作用;然而,配体p电子之间的电子关联效应迄今尚不明确。本文通过共振光电子能谱研究了包含Weyl费米子的过渡金属氧化物SrRuO₃中Ru 4d和O 2p的部分态密度(PDOS)。观测结果表明,与第一性原理计算预测相比,O 2p PDOS的畸变程度大于Ru 4d PDOS。这些结果表明,配体轨道中的电子关联对于理解强关联电子体系中p-d杂化态的电子结构具有重要意义,即使在具有拓扑态的体系中也是如此。

英文摘要:

In transition-metal compounds, the transition-metal d electrons play an important role in their physical properties; however, the effects of the electron correlation between the ligand p electrons have not been clear yet. In this Letter, the Ru 4d and O 2p partial density of states (PDOS) in transition-metal oxide SrRuO$_3$ involving Weyl fermions are investigated by resonant photoemission spectroscopy. The observations demonstrate that the O 2p PDOS is distorted from that predicted by first-principles calculations than the Ru 4d PDOS. The results indicate that the electron correlation in the ligand orbitals will be important to understand the electronic structure of the p-d hybridized state in strongly correlated electron systems, even with topological states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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