Neutron study aligns magnetic orientations in an altermagnetic MnTe crystal
Researchers led by Forschungszentrum Jülich used neutron diffraction to study an α-MnTe single crystal. An in-plane magnetic field largely aligned its orientational domains near two tesla, although the team said the observation did not establish a fully single-domain structure.
Event / data period: 2026-10-09
Published: · Updated:
Different in-plane orientations of magnetic moments in α-MnTe affect the material’s symmetry and possible measurable responses. The researchers conducted single-crystal neutron diffraction under a field along [−1,1,0]; selected magnetic reflection intensities changed up to about 2 T and then saturated.
A constrained refinement of 61 nuclear and magnetic reflections collected at 2 kelvin and 2 tesla indicated that the field favoured orientation [1,1,0], with domain populations of 0.97:0.03(5):0. Because the zero-field sample contained multiple orientations, the paper describes the result as a near-single-orientation state; it cannot distinguish antiphase domains.
Data
Reported study result
Number of reflections used to refine the field-prepared magnetic structure from single-crystal neutron diffraction.
| Reflections used in the field-on structural refinement at 2 K and 2 T | 61 | Number of reflections used to refine the field-prepared magnetic structure from single-crystal neutron diffraction. |
Methodology
The constrained refinement by the Jülich team used 61 nuclear and magnetic reflections at 2 K and 2 T. Alignment saturated near 2 T; the authors do not describe the result as a fully single-domain state.
Updated:
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