Orbital-dependent electron correlation in double-layer nickelate La3Ni2O7

Yang, Jiangang; Sun, Hualei; Hu, Xunwu; Xie, Yuyang; Miao, Taimin; Luo, Hailan; Chen, Hao; Liang, Bo; Zhu, Wenpei; Qu, Gexing; Chen, Cui-Qun; Huo, Mengwu; Huang, Yaobo; Zhang, Shenjin; Zhang, Fengfeng; Yang, Feng; Wang, Zhimin; Peng, Qinjun; Mao, Hanqing; Liu, Guodong; Xu, Zuyan; Qian, Tian; Yao, Dao‐Xin; Wang, Meng; Zhao, Lin; Zhou, Xingjiang

doi:10.1038/s41467-024-48701-7

articleNature CommunicationsMay 23, 2024GOLD OA

Orbital-dependent electron correlation in double-layer nickelate La3Ni2O7

JYJiangang Yang HSHualei Sun XHXunwu Hu YXYuyang Xie TMTaimin Miao

Chinese Academy of Sciences · Institute of Physics · +6 more institutions

PubMed

Indexed incrossrefdoajpubmed

Abstract

Abstract The latest discovery of high temperature superconductivity near 80 K in La 3 Ni 2 O 7 under high pressure has attracted much attention. Many proposals are put forth to understand the origin of superconductivity. The determination of electronic structures is a prerequisite to establish theories to understand superconductivity in nickelates but is still lacking. Here we report our direct measurement of the electronic structures of La 3 Ni 2 O 7 by high-resolution angle-resolved photoemission spectroscopy. The Fermi surface and band structures of La 3 Ni 2 O 7 are observed and compared with the band structure calculations. Strong electron correlations are revealed which are orbital- and…

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Topics & keywords

Topics

Keywords

Superconductivity
Electronic correlation
Fermi level
Electronic structure
Fermi surface
Photoemission spectroscopy
Physics
Atomic orbital

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