Direct observation of antiferromagnetic parity violation in the electronic structure of Mn2Au
Fedchenko O, Smejkal L, Kallmayer M, Lytvynenko Y, Medjanik K, Babenkov S, Vasilyev D, Klaeui M, Demsar J, Schonhense G, Jourdan M, Sinova J, Elmers HJ (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 34
Article Number: 425501
Journal Issue: 42
Abstract
Using momentum microscopy with sub-μm spatial resolution, allowing momentum resolved photoemission on individual antiferromagnetic domains, we observe an asymmetry in the electronic band structure, E(k)≠E(-k), in Mn2Au. This broken band structure parity originates from the combined time and parity symmetry, PT, of the antiferromagnetic order of the Mn moments, in connection with spin-orbit coupling. The spin-orbit interaction couples the broken parity to the Néel order parameter direction. We demonstrate a novel tool to image the Néel vector direction, N, by combining spatially resolved momentum microscopy with ab-initio calculations that correlate the broken parity with the vector N.
Involved external institutions
Germany (DE)How to cite
APA:
Fedchenko, O., Smejkal, L., Kallmayer, M., Lytvynenko, Y., Medjanik, K., Babenkov, S.,... Elmers, H.J. (2022). Direct observation of antiferromagnetic parity violation in the electronic structure of Mn2Au. Journal of Physics: Condensed Matter, 34(42). https://doi.org/10.1088/1361-648X/ac87e6
MLA:
Fedchenko, Olena, et al. "Direct observation of antiferromagnetic parity violation in the electronic structure of Mn2Au." Journal of Physics: Condensed Matter 34.42 (2022).
BibTeX: Download