Evolution of Magnetism in Ce4Ge7 under Magnetic Field and Pressure
Abstract
We report the magnetic and transport properties of single-crystalline Ce4Ge7, which crystallizes in a non-centrosymmetric orthorhombic structure (space group C2221). It undergoes an antiferromagnetic transition at TN = 7.3 K. When a magnetic field is applied along the b-axis, a metamagnetic transition occurs at 1.3 T (at 2 K). Correspondingly, this transition gives rise to an anomalous Hall effect, which is dominated by the intrinsic Karplus-Luttinger mechanism. Under hydrostatic pressure, TN of Ce4Ge7 initially increases slightly and is then gradually suppressed. For pressures above Pc = 10.2 GPa, no magnetic order is observed. The divergence of the A coefficient, the maximum of the residual resistivity, and the non-Fermi liquid behavior around Pc indicate the possible existence of an antiferromagnetic quantum critical point in Ce4Ge7.
Versions
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BibTeX
@misc{ye2026evolution,
title = {{Evolution of Magnetism in Ce$_4$Ge$_7$ under Magnetic Field and Pressure}},
author = {Kaixin Ye and Qihe Yu and Yongjian Li and Yanan Zhang and Ye Chen and Rui Li and Lin Jiao and M. Smidman and Yongjun Zhang and Yu Liu and Huiqiu Yuan},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.37129},
eprint = {2609.37129},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.37129},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Evolution of Magnetism in Ce_4Ge_7 under Magnetic Field and Pressure
AU - Kaixin Ye
AU - Qihe Yu
AU - Yongjian Li
AU - Yanan Zhang
AU - Ye Chen
AU - Rui Li
AU - Lin Jiao
AU - M. Smidman
AU - Yongjun Zhang
AU - Yu Liu
AU - Huiqiu Yuan
PY - 2026
DA - 2026/09/29
PB - arXiv
DO - 10.48550/arxiv.2609.37129
UR - https://arxiv.org/abs/2609.37129
AB - We report the magnetic and transport properties of single-crystalline Ce_4Ge_7, which crystallizes in a non-centrosymmetric orthorhombic structure (space group C222_1). It undergoes an antiferromagnetic transition at T_N = 7.3 K. When a magnetic field is applied along the b-axis, a metamagnetic transition occurs at 1.3 T (at 2 K). Correspondingly, this transition gives rise to an anomalous Hall effect, which is dominated by the intrinsic Karplus-Luttinger mechanism. Under hydrostatic pressure, T_N of Ce_4Ge_7 initially increases slightly and is then gradually suppressed. For pressures above P_c = 10.2 GPa, no magnetic order is observed. The divergence of the A coefficient, the maximum of the residual resistivity, and the non-Fermi liquid behavior around P_c indicate the possible existence of an antiferromagnetic quantum critical point in Ce_4Ge_7.
ER -