Universität zu Köln

Weber, T., Fobes, D. M., Waizner, J., Steffens, P., Tucker, G. S., Bohm, M., Beddrich, L., Franz, C., Gabold, H., Bewley, R., Voneshen, D., Skoulatos, M., Georgii, R., Ehlers, G., Bauer, A., Pfleiderer, C., Boeni, P., Janoschek, M. and Garst, M. (2022). Topological magnon band structure of emergent Landau levels in a skyrmion lattice. Science, 375 (6584). S. 1025 - 1093. WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 1095-9203

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Abstract

The motion of a spin excitation across topologically nontrivial magnetic order exhibits a deflection that is analogous to the effect of the Lorentz force on an electrically charged particle in an orbital magnetic field. We used polarized inelastic neutron scattering to investigate the propagation of magnons (i.e., bosonic collective spin excitations) in a lattice of skyrmion tubes in manganese silicide. For wave vectors perpendicular to the skyrmion tubes, the magnon spectra are consistent with the formation of finely spaced emergent Landau levels that are characteristic of the fictitious magnetic field used to account for the nontrivial topological winding of the skyrmion lattice. This provides evidence of a topological magnon band structure in reciprocal space, which is borne out of the nontrivial real-space topology of a magnetic order.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Weber, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fobes, D. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Waizner, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Steffens, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tucker, G. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bohm, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Beddrich, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Franz, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gabold, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bewley, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Voneshen, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Skoulatos, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Georgii, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ehlers, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bauer, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pfleiderer, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boeni, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Janoschek, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Garst, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-694957
DOI:	10.1126/science.abe4441
Journal or Publication Title:	Science
Volume:	375
Number:	6584
Page Range:	S. 1025 - 1093
Date:	2022
Publisher:	AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication:	WASHINGTON
ISSN:	1095-9203
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NEUTRON-SCATTERING; SPIN EXCITATIONS; VISUALIZATION; SOFTWARE; MOMENTUM Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/69495