European Conference on Neutron Scattering 2023

Non-reciprocal magnons in non-centrosymmetric MnSi

20 Mar 2023, 16:00

2h

Yards 4 - 6 (Fakultät für Maschinenwesen)

Board: MO-077

Poster Magnetism, Superconductivity, Topological Systems, Magnetic Thin Films an other electronic phenomena Poster Session MONDAY

Speaker

Robert Georgii

Description

Spin waves in chiral magnetic materials are strongly influenced by the Dzyaloshinskii-Moriya interaction, resulting in intriguing phenomena like nonreciprocal magnon propagation and magnetochiral dichroism. We studied the nonreciprocal magnon spectrum of the archetypical chiral magnet MnSi and its evolution as a function of magnetic field in all magnetic phases. Using inelastic neutron scattering, the magnon energies and their spectral weights are determined quantitatively after deconvolution with the instrumental resolution [1,2].

[1] T. Weber, J. Waizner, G. S. Tucker, R. Georgii, M. Kugler, A. Bauer, C. Pfleiderer,
M. Garst, and P. Böni, Phys. Rev. B 97, 224403 (2018).
[2] T. Weber, J. Waizner, G. S. Tucker, L. Beddrich, M. Skoulatos, R. Georgii, A. Bauer,
C. Pfleiderer, M. Garst, and P. Böni, AIP Advances 8, 101328 (2018).