Authors
Daniel Jost, Resham Babu Regmi, Eder G Lomeli, Samuel Sahel-Schackis, Monika Scheufele, Marcel Neuhaus, Rachel Nickel, Flora Yakhou, Kurt Kummer, Nicholas B Brookes, Lingjia Shen, Georgi L Dakovski, Nirmal J Ghimire, Stephan Geprägs, Matthias F Kling
Published in
Science (New York, N.Y.). Volume 394. Issue 6823. Pages 541-543. Oct 29, 2026. Epub Oct 29, 2026.
Abstract
Altermagnetism has been recognized as a magnetic phase that bridges the properties of ferro- and antiferromagnetism. The momentum-dependent spin splitting observed in these materials reflects their distinctive symmetry characteristics, which also establish the conditions for chiral magnons to emerge. Here we provide direct experimental evidence for a chiral magnon in the altermagnetic candidate manganese telluride (MnTe) revealed by circular-dichroism resonant inelastic x-ray scattering. This mode, which we term chiral altermagnon, exhibits a distinct momentum dependence of its spin polarization consistent with the altermagnetic g-wave symmetry of MnTe. Our polarization-resolved data corroborate the existence of a discrete class of magnetic excitations, demonstrating how altermagnetic order shapes spin dynamics and paving the way for advances in spintronic and quantum technologies.
PMID:
42956144
Bibliographic data and abstract were imported from PubMed on 30 Oct 2026.
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