Ultrasonic observation of small Fermi surfaces in LaTIn5 (T = Co, Rh, Ir)

JJAP Conference Proceedings 2026 Open access

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Authors: Ryosuke Kurihara, Yusuke Hirose, Kazuki Matsui, Atsushi Miyake, Ryoma Tsunoda, Masaki Kondo, Rikio Settai, Mitsuhiro Akatsu, Yuichi Nemoto, Hiroshi Yaguchi, Masashi Tokunaga
DOI: 10.56646/jjapcp.12.0_011006
Cited by: 0
References: 13

Abstract

We performed high-field ultrasonic measurements on LaTIn5 (T = Co, Rh, Ir) to reveal the origin of the small Fermi surface that was recently observed in LaRhIn5 with an oscillation frequency of 6.8 T. We observed quantum oscillations originating from this Fermi surface in LaRhIn5. In addition, we revealed that LaCoIn5 and LaIrIn5 exhibit quantum oscillations with frequencies below 100 T, indicating hidden Fermi surfaces in these compounds. Furthermore, Co-substituted LaRhIn5 exhibited quantum oscillations with a frequency of 10 T. Our results suggest that the small Fermi surface originates from bulk properties and that 3d electrons of the transition metal contribute to its formation.

Fields of Study & Subjects

Rare-earth and actinide compounds Physics of Superconductivity and Magnetism Magnetic and transport properties of perovskites and related materials

Publication details

Journal / source
JJAP Conference Proceedings
Volume
12
Issue
0
Pages
011006–011006
Publication date
1 January 2026
Language
EN