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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.06235 |
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| _version_ | 1866911305336619008 |
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| author | Kurihara, Ryosuke Hirose, Yusuke Matsui, Kazuki Miyake, Atsushi Tsunoda, Ryoma Kondo, Masaki Settai, Rikio Akatsu, Mitsuhiro Nemoto, Yuichi Yaguchi, Hiroshi Tokunaga, Masashi |
| author_facet | Kurihara, Ryosuke Hirose, Yusuke Matsui, Kazuki Miyake, Atsushi Tsunoda, Ryoma Kondo, Masaki Settai, Rikio Akatsu, Mitsuhiro Nemoto, Yuichi Yaguchi, Hiroshi Tokunaga, Masashi |
| contents | We performed high-field ultrasonic measurements on La$T$In$_5$ ($T$ = Co, Rh, Ir) to reveal the origin of the small Fermi surface that was recently observed in LaRhIn$_5$ with an oscillation frequency of 6.8 T. We observed quantum oscillations originating from this Fermi surface in LaRhIn$_5$. In addition, we revealed that LaCoIn$_5$ and LaIrIn$_5$ exhibit quantum osciilations with frequencies below 100 T, indicating hidden Fermi surfaces in these compounds. Furthermore, Co-substituted LaRhIn$_5$ 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_06235 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ultrasonic observation of small Fermi surfaces in La$T$In$_5$ ($T$ = Co, Rh, Ir) Kurihara, Ryosuke Hirose, Yusuke Matsui, Kazuki Miyake, Atsushi Tsunoda, Ryoma Kondo, Masaki Settai, Rikio Akatsu, Mitsuhiro Nemoto, Yuichi Yaguchi, Hiroshi Tokunaga, Masashi Strongly Correlated Electrons We performed high-field ultrasonic measurements on La$T$In$_5$ ($T$ = Co, Rh, Ir) to reveal the origin of the small Fermi surface that was recently observed in LaRhIn$_5$ with an oscillation frequency of 6.8 T. We observed quantum oscillations originating from this Fermi surface in LaRhIn$_5$. In addition, we revealed that LaCoIn$_5$ and LaIrIn$_5$ exhibit quantum osciilations with frequencies below 100 T, indicating hidden Fermi surfaces in these compounds. Furthermore, Co-substituted LaRhIn$_5$ 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. |
| title | Ultrasonic observation of small Fermi surfaces in La$T$In$_5$ ($T$ = Co, Rh, Ir) |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2512.06235 |