Physics Commons^™

Anomalous High-Energy Waterfall-Like Electronic Structure In 5 D Transition Metal Oxide Sr2Iro4 With A Strong Spin-Orbit Coupling, Yan Liu, Li Yu, Xiaowen Jia, Jianzhou Zhao, Hongming Weng, Yingying Peng, Chaoyu Chen, Zhuojin Xie, Daixiang Mou, Junfeng He, Xu Liu, Ya Feng, Hemian Yi, Lin Zhao, Guodong Liu, Shaolong He, Xiaoli Dong, Jun Zhang, Zuyan Xu, Chuangtian Chen, Gang Cao, Xi Dai, Zhong Fang, X. J. Zhou

Physics and Astronomy Faculty Publications

The low energy electronic structure of Sr₂IrO₄ has been well studied and understood in terms of an effective J_eff= 1/2 Mott insulator model. However, little work has been done in studying its high energy electronic behaviors. Here we report a new observation of the anomalous high energy electronic structure in Sr₂IrO₄. By taking high-resolution angle-resolved photoemission measurements on Sr₂IrO₄ over a wide energy range, we have revealed for the first time that the high energy electronic structures show unusual nearly-vertical bands that extend over a large energy range. …