Electronic and topological properties of Ce-based honeycomb ferromagnet Ce2Zn6Ge3
Abstract
Ce2Zn6Ge3 is a rare example of the Ce-based honeycomb ferromagnet. Here, we report its Fermi surface and topological properties by quantum oscillations via the magnetoresistance and tunnel diode oscillator (TDO) based measurements, in combination with the density functional theory (DFT) calculations. Four fundamental frequencies are observed in the quantum oscillations, and their angle dependence is more compatible with the DFT calculations assuming that the 4f-electrons are localized, suggesting a localized nature of ferromagnetism in Ce2Zn6Ge3. Furthermore, the observations of negative longitudinal magnetoresistance and non-zero Berry phase, as well as the existence of two pairs of Weyl points near the Fermi level as revealed from the calculated electronic structures, provide strong evidence for nontrivial topology in Ce2Zn6Ge3. These findings suggest that Ce2Zn6Ge3 could provide a unique platform to study magnetism, topology, quantum criticality and their interplay.
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BibTeX
@misc{huang2026electronic,
title = {{Electronic and topological properties of Ce-based honeycomb ferromagnet Ce$_2$Zn$_6$Ge$_3$}},
author = {Yanen Huang and Zihan Yang and Jiawen Zhang and Yuwei Zhou and Lubin Wang and Gang Li and Michael Smidman and Chao Cao and Yu Liu and Huiqiu Yuan},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.34477},
eprint = {2609.34477},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.34477},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Electronic and topological properties of Ce-based honeycomb ferromagnet Ce_2Zn_6Ge_3
AU - Yanen Huang
AU - Zihan Yang
AU - Jiawen Zhang
AU - Yuwei Zhou
AU - Lubin Wang
AU - Gang Li
AU - Michael Smidman
AU - Chao Cao
AU - Yu Liu
AU - Huiqiu Yuan
PY - 2026
DA - 2026/09/28
PB - arXiv
DO - 10.48550/arxiv.2609.34477
UR - https://arxiv.org/abs/2609.34477
AB - Ce_2Zn_6Ge_3 is a rare example of the Ce-based honeycomb ferromagnet. Here, we report its Fermi surface and topological properties by quantum oscillations via the magnetoresistance and tunnel diode oscillator (TDO) based measurements, in combination with the density functional theory (DFT) calculations. Four fundamental frequencies are observed in the quantum oscillations, and their angle dependence is more compatible with the DFT calculations assuming that the 4f-electrons are localized, suggesting a localized nature of ferromagnetism in Ce_2Zn_6Ge_3. Furthermore, the observations of negative longitudinal magnetoresistance and non-zero Berry phase, as well as the existence of two pairs of Weyl points near the Fermi level as revealed from the calculated electronic structures, provide strong evidence for nontrivial topology in Ce_2Zn_6Ge_3. These findings suggest that Ce_2Zn_6Ge_3 could provide a unique platform to study magnetism, topology, quantum criticality and their interplay.
ER -