Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 47: Altermagnets V

MA 47.11: Vortrag

Donnerstag, 12. März 2026, 17:45–18:00, HSZ/0002

Altermagnetism from the point of view of Mössbauer spectroscopy and other local probes — •Felix Seewald¹, Tillmann Weinhold¹, Cornelius Herrmann¹, Jan Friedrichsen¹, Domenic Nowak², Rowena Wachtel², Rajib Sarkar¹, Sabine Wurmehl², and Hans-Henning Klauss¹ — ¹IFMP, TUD Dresden University of Technology — ²Leibniz Institute for Solid State and Materials Research, IFW, Dresden

Altermagnetism has emerged as a hot topic of interest in solid state magnetism during recent years. Altermagnets combine a compensated antiferromagnetic structure with spin-split electronic bands. [1, 2]

We want to discuss what one can learn about altermagnetism from (nuclear) local probe spectroscopy, focusing mainly on Mössbauer spectroscopy (MBS) and NMR/NQR.

Depending on the type of altermagnet and the easy axis of the antiferrromagnetic order, local probes can prove or disprove the altermagnetic order. For d-wave altermagnets in Mössbauer spectroscopy and NMR/NQR studies the interplay between the local electric field gradient and the local magnetic hyperfine field may directly differentiate the altermagnetic sites.

We wull discuss Mössbauer spectroscpy as well as NMR/NQR studies on candidates FeF₂, FeF₃, La₂O₂FeMnOSe₂ and furthermore highlight the challenges and restrictions they are connected with.

[1] L. Smejkal et al., Phys. Rev. X 12, 031042 (2022)

[2] Fender et al., J. Am. Chem. Soc., 147, 2257-2274 (2025)

Keywords: Altermagnetism; Mössbauer; NMR; muSR; local Probes