Hybridization Effects Revealed by Angle-Resolved Photoemission Spectroscopy in Heavy-Fermion Ce2IrIn8

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Haijiang Liu
  • Yuanji Xu
  • Yigui Zhong
  • Jianyu Guan
  • Lingyuan Kong
  • Yaobo Huang
  • Qiuyun Chen
  • Genfu Chen
  • Ming Shi
  • Yi-feng Yang
  • Hong Ding

Detail(s)

Original languageEnglish
Article number097101
Journal / PublicationChinese Physics Letters
Volume36
Issue number9
Publication statusPublished - Sep 2019
Externally publishedYes

Abstract

We utilize high-resolution resonant angle-resolved photoemission spectroscopy (ARPES) to study the band structure and hybridization effect of the heavy-fermion compound Ce2IrIn8. We observe a nearly flat band at the binding energy of 7 meV below the coherent temperature Tcoh 40 K, which characterizes the electrical resistance maximum and indicates the onset temperature of hybridization. However, the Fermi vector and the Fermi surface volume have little change around Tcoh, which challenges the widely believed evolution from a high-temperature small Fermi surface to a low-temperature large Fermi surface. Our experimental results of the band structure fit well with the density functional theory plus dynamic mean-field theory calculations.

Citation Format(s)

Hybridization Effects Revealed by Angle-Resolved Photoemission Spectroscopy in Heavy-Fermion Ce2IrIn8. / Liu, Haijiang; Xu, Yuanji; Zhong, Yigui; Guan, Jianyu; Kong, Lingyuan; Ma, Junzhang; Huang, Yaobo; Chen, Qiuyun; Chen, Genfu; Shi, Ming; Yang, Yi-feng; Ding, Hong.

In: Chinese Physics Letters, Vol. 36, No. 9, 097101, 09.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review