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Nanomaterials
Volume 16
Issue 2
10.3390/nano16020123
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Observation of Complete Orbital Two-Channel Kondo Effect in van der Waals Ferromagnet Fe3GaTe2

by
Chunhao Bao
1,
Zhiyue Li
2,3,
Xiaolong Yin
1,
Jifeng Shao
2,
Longxiang Li
2,
Xiaoming Ma
2,
Shu Guo
2 and
Tingyong Chen
2,3,*
1
Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
2
Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
3
International Quantum Academy, Shenzhen 518048, China
*
Author to whom correspondence should be addressed.
Nanomaterials 2026, 16(2), 123; https://doi.org/10.3390/nano16020123 (registering DOI)
Submission received: 19 December 2025 / Revised: 9 January 2026 / Accepted: 10 January 2026 / Published: 16 January 2026
(This article belongs to the Section Physical Chemistry at Nanoscale)
Versions Notes

Abstract

The orbital two-channel Kondo (2CK) effect is one of the crucial systems with non-Fermi liquid (NFL) behavior. But the full three-regime transport evidence has never been observed in one sample. Here, all three resistive regimes for the orbital 2CK effect induced by two-level systems (TLSs) have been observed in the van der Waals ferromagnet Fe3GaTe2. Electron behavior undergoes a continuous transition from electron scattering to NFL behavior, and subsequently to Fermi liquid behavior. The magnetic field does not affect any regimes, indicating the nonmagnetic origin of the TLSs in Fe3GaTe2. In addition, instead of topological Hall, the slope of a linear negative magnetoresistance is related to spin-magnon scattering and could be utilized to infer the emergence of spin textures. Our findings indicate that Fe3GaTe2 may be an ideal platform to study electron correlation and topological phenomena.
Keywords: Fe3GaTe2; orbital two-channel Kondo effect; magnetotransport Fe3GaTe2; orbital two-channel Kondo effect; magnetotransport

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MDPI and ACS Style

Bao, C.; Li, Z.; Yin, X.; Shao, J.; Li, L.; Ma, X.; Guo, S.; Chen, T. Observation of Complete Orbital Two-Channel Kondo Effect in van der Waals Ferromagnet Fe3GaTe2. Nanomaterials 2026, 16, 123. https://doi.org/10.3390/nano16020123

AMA Style

Bao C, Li Z, Yin X, Shao J, Li L, Ma X, Guo S, Chen T. Observation of Complete Orbital Two-Channel Kondo Effect in van der Waals Ferromagnet Fe3GaTe2. Nanomaterials. 2026; 16(2):123. https://doi.org/10.3390/nano16020123

Chicago/Turabian Style

Bao, Chunhao, Zhiyue Li, Xiaolong Yin, Jifeng Shao, Longxiang Li, Xiaoming Ma, Shu Guo, and Tingyong Chen. 2026. "Observation of Complete Orbital Two-Channel Kondo Effect in van der Waals Ferromagnet Fe3GaTe2" Nanomaterials 16, no. 2: 123. https://doi.org/10.3390/nano16020123

APA Style

Bao, C., Li, Z., Yin, X., Shao, J., Li, L., Ma, X., Guo, S., & Chen, T. (2026). Observation of Complete Orbital Two-Channel Kondo Effect in van der Waals Ferromagnet Fe3GaTe2. Nanomaterials, 16(2), 123. https://doi.org/10.3390/nano16020123

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