μSR measurements of 3D Ising ferromagnetism in bulk Fe3GeTe2 crystals
Abstract
Fe3GeTe2 is a quasi-two-dimensional itinerant ferromagnet with a van-der-Waals layered structure that exhibits substantial magnetic anisotropy. In bulk samples, this material becomes magnetically ordered below 220~K, while in thin samples, the gate-tunability of the ferromagnetic moment has attracted significant interest. Alongside high-temperature ferromagnetism, a low-temperature magnetic state occurs whose nature has not been conclusively identified, with some studies suggesting a transition between ferromagnetism and antiferromagnetism with temperature. Here we present magnetometry and μSR data that demonstrate that Fe3GeTe2 exhibits three-dimenional Ising-like ferromagnetism over the entire temperature range between TC=220~K and 2~K. The feature at 170~K that has previously been proposed to be a transition to antiferromagnetism is instead likely to represent a domain-freezing transition.
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BibTeX
@misc{wilson2026μsr,
title = {{$μ$SR measurements of 3D Ising ferromagnetism in bulk Fe$_3$GeTe$_2$ crystals}},
author = {M. N. Wilson and J. Huang and T. J. Hicken and D. A. Mayoh and B. M. Huddart and G. Balakrishnan and T. Lancaster},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.39806},
eprint = {2609.39806},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.39806},
note = {CC BY-NC-SA 4.0},
}
RIS
TY - UNPB
TI - μSR measurements of 3D Ising ferromagnetism in bulk Fe_3GeTe_2 crystals
AU - M. N. Wilson
AU - J. Huang
AU - T. J. Hicken
AU - D. A. Mayoh
AU - B. M. Huddart
AU - G. Balakrishnan
AU - T. Lancaster
PY - 2026
DA - 2026/09/30
PB - arXiv
DO - 10.48550/arxiv.2609.39806
UR - https://arxiv.org/abs/2609.39806
AB - Fe_3GeTe_2 is a quasi-two-dimensional itinerant ferromagnet with a van-der-Waals layered structure that exhibits substantial magnetic anisotropy. In bulk samples, this material becomes magnetically ordered below 220~K, while in thin samples, the gate-tunability of the ferromagnetic moment has attracted significant interest. Alongside high-temperature ferromagnetism, a low-temperature magnetic state occurs whose nature has not been conclusively identified, with some studies suggesting a transition between ferromagnetism and antiferromagnetism with temperature. Here we present magnetometry and μSR data that demonstrate that Fe_3GeTe_2 exhibits three-dimenional Ising-like ferromagnetism over the entire temperature range between T_C=220~K and 2~K. The feature at 170~K that has previously been proposed to be a transition to antiferromagnetism is instead likely to represent a domain-freezing transition.
ER -