A Strategy Toward Room Temperature Topological Hall Effect via Local Moment Magnetism
Abstract
Topological spin textures in local moment systems hold great promise for technological applications due to their large magnetic moments, strong spin-orbit coupling (SOC), and high tunability. Finding new spin textures that are stable near room temperature is paramount to maximizing their potential for applications. Here, we provide a strategy for realizing topological spin textures at high temperatures by identifying rare earth (R) magnets ordering at or near room temperature. We demonstrate the feasibility of this strategy in one of these magnets, hexagonal Gd5Pb3, which orders at TC = 285 K. The indication for topological spin textures comes from topological Hall effect (THE), which, in Gd5Pb3, occurs between T = 100 - 200 K, an order of magnitude higher temperature than in other reported R-based systems. Our results present an opportunity to explore the role of SOC, anisotropic exchange, geometric frustration, and magnetic interactions in stabilizing topological spin textures, and provide a pathway toward realizing them near room temperature in R-based magnets.
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BibTeX
@misc{rao2026strategy,
title = {{A Strategy Toward Room Temperature Topological Hall Effect via Local Moment Magnetism}},
author = {Karthik Rao and Kevin Allen and Yuxiang Gao and Arushi and Sanu Mishra and Birender Singh and Kenneth S. Burch and Liangzi Deng and Shanta R. Saha and Johnpierre Paglione and Minseong Lee and Vivien Zapf and Emilia Morosan},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.03223},
eprint = {2609.03223},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.03223},
}
RIS
TY - UNPB
TI - A Strategy Toward Room Temperature Topological Hall Effect via Local Moment Magnetism
AU - Karthik Rao
AU - Kevin Allen
AU - Yuxiang Gao
AU - Arushi
AU - Sanu Mishra
AU - Birender Singh
AU - Kenneth S. Burch
AU - Liangzi Deng
AU - Shanta R. Saha
AU - Johnpierre Paglione
AU - Minseong Lee
AU - Vivien Zapf
AU - Emilia Morosan
PY - 2026
DA - 2026/09/02
PB - arXiv
DO - 10.48550/arxiv.2609.03223
UR - https://arxiv.org/abs/2609.03223
AB - Topological spin textures in local moment systems hold great promise for technological applications due to their large magnetic moments, strong spin-orbit coupling (SOC), and high tunability. Finding new spin textures that are stable near room temperature is paramount to maximizing their potential for applications. Here, we provide a strategy for realizing topological spin textures at high temperatures by identifying rare earth (R) magnets ordering at or near room temperature. We demonstrate the feasibility of this strategy in one of these magnets, hexagonal Gd_5Pb_3, which orders at T_C = 285 K. The indication for topological spin textures comes from topological Hall effect (THE), which, in Gd_5Pb_3, occurs between T = 100 - 200 K, an order of magnitude higher temperature than in other reported R-based systems. Our results present an opportunity to explore the role of SOC, anisotropic exchange, geometric frustration, and magnetic interactions in stabilizing topological spin textures, and provide a pathway toward realizing them near room temperature in R-based magnets.
ER -