Three-dimensional bulk electronic structure of the Kondo lattice CeIn3 revealed by photoemission

• Published in: Scientific reports Vol. 6; no. 1; p. 33613
• Main Authors: Zhang, Yun, Lu, Haiyan, Zhu, Xiegang, Tan, Shiyong, Liu, Qin, Chen, Qiuyun, Feng, Wei, Xie, Donghua, Luo, Lizhu, Liu, Yu, Song, Haifeng, Zhang, Zhengjun, Lai, Xinchun
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 19.09.2016; Nature Publishing Group
• Subjects: 639/766/119/544; 639/766/119/995; Humanities and Social Sciences; multidisciplinary; Polarization; Quantum theory; Science; Spectroscopy; Topology
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/srep33613

We show the three-dimensional electronic structure of the Kondo lattice CeIn 3 using soft x-ray angle resolved photoemission spectroscopy in the paramagnetic state. For the first time, we have directly observed the three-dimensional topology of the Fermi surface of CeIn 3 by photoemission. The Fermi surface has a complicated hole pocket centred at the Γ-Z line and an elliptical electron pocket centred at the R point of the Brillouin zone. Polarization and photon-energy dependent photoemission results both indicate the nearly localized nature of the 4 f electrons in CeIn 3 , consistent with the theoretical prediction by means of the combination of density functional theory and single-site dynamical mean-field theory. Those results illustrate that the f electrons of CeIn 3 , which is the parent material of CeMIn 5 compounds, are closer to the localized description than the layered CeMIn 5 compounds.