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DOE OSTI · 3378246

Magnetic structure of topological nodal-line semimetal EuSb 2

Kim, M. G. [Univ. of Wisconsin, Milwaukee, WI (United States)] (ORCID:000000017676454X)·Boney, S. [Univ. of Wisconsin, Milwaukee, WI (United States)]·Rutowski, L. [Univ. of Wisconsin, Milwaukee, WI (United States)]·Acevedo-Esteves, Raul [Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)] (ORCID:0000000336687089)·Nelson, C. [Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)] (ORCID:0000000201960340)
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Abstract

Here, we investigated the magnetic structure of the magnetic topological nodal-line semimetal EuSb 2 using x-ray resonant magnetic scattering at the Eu 𝐿 3 absorption edge. Forbidden magnetic reflections confirm antiferromagnetic ordering with propagation vector 𝐪 = (0.5,0,0) below 𝑇 N ≈ 27 K. Azimuthal-angle-dependent measurements reveal that the Eu moments are aligned along the monoclinic 𝑏 axis. Comparison between the measured 𝐐-dependent magnetic Bragg peak intensities and calculations based on representation analysis identifies the magnetic structure as the A-type antiferromagnetic 𝛤 4 representation with a (++−−) arrangement along the 𝑎 direction. These results establish the microscopic magnetic structure of EuSb 2 and provide a basis for understanding the interplay between antiferromagnetism and topological electronic states in this system.

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36 MATERIALS SCIENCEAntiferromagnetMagnetic structureNodal-line semimetal

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Kim, M. G. [Univ. of Wisconsin, Milwaukee, WI (United States)] (ORCID:000000017676454X), Boney, S. [Univ. of Wisconsin, Milwaukee, WI (United States)], Rutowski, L. [Univ. of Wisconsin, Milwaukee, WI (United States)], Acevedo-Esteves, Raul [Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)] (ORCID:0000000336687089), Nelson, C. [Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)] (ORCID:0000000201960340). 2026-10-01. Magnetic structure of topological nodal-line semimetal EuSb 2. https://doi.org/10.1016/j.jmmm.2026.174386

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