Kondo-coupled van der Waals antiferromagnet with high-mobility quasiparticles
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909923651092480 |
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| author | Zeng, Hai Zhang, Yang Ji, Bingke Cai, Jiaqiang Zou, Shuo Wang, Zhuo Dong, Chao Luo, Kangjian Yuan, Yang Wang, Kai Zhang, Jinglei Xi, Chuanyin Wang, Junfeng Li, Liang Dai, Yaomin Li, Jing Luo, Yongkang |
| author_facet | Zeng, Hai Zhang, Yang Ji, Bingke Cai, Jiaqiang Zou, Shuo Wang, Zhuo Dong, Chao Luo, Kangjian Yuan, Yang Wang, Kai Zhang, Jinglei Xi, Chuanyin Wang, Junfeng Li, Liang Dai, Yaomin Li, Jing Luo, Yongkang |
| contents | Two-dimensional van der Waals (vdW) materials exhibit high carrier mobility and tunability, making them suitable for low-power, high-performance electronic and spintronic applications. Incorporating narrow-band electronic correlation effects could further promote tunability, though mass renormalization may impact carrier mobility. It is therefore challenging to identify a vdW material with both high mobility and strong correlation. Herein, by a combination of optical spectroscopy and high-field quantum-oscillation measurements, we observe significant effective-mass enhancement in CeTe$_3$ at low temperature, arising from not only the band-structure modulation by antiferromagnetic ordering but also the narrow-band correlation effect. Despite the mass enhancement, the quantum mobility surprisingly \textit{increases} and reaches $\sim$2403 cm$^2$/Vs, likely benefiting from topological protection. Remarkably, these unique properties are maintained in atomically thin nanoflakes with quantum mobility enhanced to $\sim$3158 cm$^2$/Vs. Thus, CeTe$_3$ emerges as a promising Kondo-coupled vdW antiferromagnetic metal with high-mobility quasiparticles, potentially unlocking new device concepts. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_23653 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Kondo-coupled van der Waals antiferromagnet with high-mobility quasiparticles Zeng, Hai Zhang, Yang Ji, Bingke Cai, Jiaqiang Zou, Shuo Wang, Zhuo Dong, Chao Luo, Kangjian Yuan, Yang Wang, Kai Zhang, Jinglei Xi, Chuanyin Wang, Junfeng Li, Liang Dai, Yaomin Li, Jing Luo, Yongkang Strongly Correlated Electrons Mesoscale and Nanoscale Physics Materials Science Superconductivity Quantum Physics Two-dimensional van der Waals (vdW) materials exhibit high carrier mobility and tunability, making them suitable for low-power, high-performance electronic and spintronic applications. Incorporating narrow-band electronic correlation effects could further promote tunability, though mass renormalization may impact carrier mobility. It is therefore challenging to identify a vdW material with both high mobility and strong correlation. Herein, by a combination of optical spectroscopy and high-field quantum-oscillation measurements, we observe significant effective-mass enhancement in CeTe$_3$ at low temperature, arising from not only the band-structure modulation by antiferromagnetic ordering but also the narrow-band correlation effect. Despite the mass enhancement, the quantum mobility surprisingly \textit{increases} and reaches $\sim$2403 cm$^2$/Vs, likely benefiting from topological protection. Remarkably, these unique properties are maintained in atomically thin nanoflakes with quantum mobility enhanced to $\sim$3158 cm$^2$/Vs. Thus, CeTe$_3$ emerges as a promising Kondo-coupled vdW antiferromagnetic metal with high-mobility quasiparticles, potentially unlocking new device concepts. |
| title | Kondo-coupled van der Waals antiferromagnet with high-mobility quasiparticles |
| topic | Strongly Correlated Electrons Mesoscale and Nanoscale Physics Materials Science Superconductivity Quantum Physics |
| url | https://arxiv.org/abs/2506.23653 |