中国物理B ›› 2026, Vol. 35 ›› Issue (3): 37101-037101.doi: 10.1088/1674-1056/ae3123

• • 上一篇    

Electronic structure study of the intermetallic compound GdRhIn5

Yulu He(贺宇璐)1,†, Bo Wang(王博)1,†, Xiangfei Yang(杨向飞)1,†, Dengpeng Yuan(袁登鹏)1, Wei Feng(冯卫)1, Yaobo Huang(黄耀波)2, and Qiuyun Chen(陈秋云)1,‡   

  1. 1 Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621907, China;
    2 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
  • 收稿日期:2025-11-21 修回日期:2025-12-22 接受日期:2025-12-25 发布日期:2026-02-11
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2022YFA1402201), the National Natural Science Foundation of China (Grant Nos. U2430209, 12122409, and 52394164), the Institute of Materials, China Academy of Engineering Physics (Grant No. TP02202408), and the Fund of Science and Technology on Surface Physics and Chemistry Laboratory (Grant No. XKFZ202304).

Electronic structure study of the intermetallic compound GdRhIn5

Yulu He(贺宇璐)1,†, Bo Wang(王博)1,†, Xiangfei Yang(杨向飞)1,†, Dengpeng Yuan(袁登鹏)1, Wei Feng(冯卫)1, Yaobo Huang(黄耀波)2, and Qiuyun Chen(陈秋云)1,‡   

  1. 1 Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621907, China;
    2 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
  • Received:2025-11-21 Revised:2025-12-22 Accepted:2025-12-25 Published:2026-02-11
  • Contact: Qiuyun Chen E-mail:sheqiuyun@126.com
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2022YFA1402201), the National Natural Science Foundation of China (Grant Nos. U2430209, 12122409, and 52394164), the Institute of Materials, China Academy of Engineering Physics (Grant No. TP02202408), and the Fund of Science and Technology on Surface Physics and Chemistry Laboratory (Grant No. XKFZ202304).

摘要: Heavy-fermion compounds frequently host emergent phases - most notably non-BCS superconductivity and unconventional quantum criticality - whose microscopic origins can invariably be traced to the entanglement of itinerant and nearly localized electronic degrees of freedom. In this work, we carry out a systematic study on the electronic structure and quasiparticle features of the antiferromagnetic intermetallic compound GdRhIn$_5$, utilizing high-resolution angle-resolved photoemission spectroscopy (ARPES) measurements. Energy-dependent measurements reveal the coexistence of Fermi surface topologies with both quasi-two-dimensional and three-dimensional characteristics. Notably, the quasiparticle bands commonly observed in conventional cerium-based compounds are absent from the resonance data, likely due to the strong localization nature of the Gd 4f states within the compound. Temperature-dependent studies, combined with density functional theory (DFT) calculations, demonstrate that as temperature decreases, the electronic density of states (EDC) near the Fermi level increases, while the peak position of the MDC associated with the $\beta $ energy band shows a shrinking trend. This systematic exploration of GdRhIn$_5$'s electronic structure enhances our comprehension of the microscopic physical properties not only of GdRhIn$_5$ but also of the broader family of rare-earth-based 115 systems.

关键词: heavy fermion, 4f-electron, electronic structure, localized-itinerant

Abstract: Heavy-fermion compounds frequently host emergent phases - most notably non-BCS superconductivity and unconventional quantum criticality - whose microscopic origins can invariably be traced to the entanglement of itinerant and nearly localized electronic degrees of freedom. In this work, we carry out a systematic study on the electronic structure and quasiparticle features of the antiferromagnetic intermetallic compound GdRhIn$_5$, utilizing high-resolution angle-resolved photoemission spectroscopy (ARPES) measurements. Energy-dependent measurements reveal the coexistence of Fermi surface topologies with both quasi-two-dimensional and three-dimensional characteristics. Notably, the quasiparticle bands commonly observed in conventional cerium-based compounds are absent from the resonance data, likely due to the strong localization nature of the Gd 4f states within the compound. Temperature-dependent studies, combined with density functional theory (DFT) calculations, demonstrate that as temperature decreases, the electronic density of states (EDC) near the Fermi level increases, while the peak position of the MDC associated with the $\beta $ energy band shows a shrinking trend. This systematic exploration of GdRhIn$_5$'s electronic structure enhances our comprehension of the microscopic physical properties not only of GdRhIn$_5$ but also of the broader family of rare-earth-based 115 systems.

Key words: heavy fermion, 4f-electron, electronic structure, localized-itinerant

中图分类号:  (Strongly correlated electron systems; heavy fermions)

  • 71.27.+a
72.15.Rn (Localization effects (Anderson or weak localization)) 79.60.-i (Photoemission and photoelectron spectra) 71.20.Eh (Rare earth metals and alloys)