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Nature

Resumen/Descripción – provisto por la editorial en inglés

Nature is a weekly international journal publishing the finest peer-reviewed research in all fields of science and technology on the basis of its originality, importance, interdisciplinary interest, timeliness, accessibility, elegance and surprising conclusions. Nature also provides rapid, authoritative, insightful and arresting news and interpretation of topical and coming trends affecting science, scientists and the wider public.

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Información

Tipo de recurso:

revistas

ISSN impreso

0028-0836

ISSN electrónico

1476-4687

Editor responsable

Springer Nature

País de edición

Reino Unido

Fecha de publicación

1869-

Cobertura temática

Ciencias naturales

Ingeniería y tecnología

Ciencias médicas y de la salud

Ciencias agrícolas y veterinarias

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doi: 10.1038/s41586-021-03543-x

Symmetry-enforced topological nodal planes at the Fermi surface of a chiral magnet

Marc A. Wilde; Matthias Dodenhöft; Arthur Niedermayr; Andreas Bauer; Moritz M. Hirschmann; Kirill Alpin; Andreas P. Schnyder; Christian Pfleiderer

<jats:title>Abstract</jats:title><jats:p>Despite recent efforts to advance spintronics devices and quantum information technology using materials with non-trivial topological properties, three key challenges are still unresolved<jats:sup>1â€“9</jats:sup>. First, the identification of topological band degeneracies that are generically rather than accidentally located at the Fermi level. Second, the ability to easily control such topological degeneracies. And third, the identification of generic topological degeneracies in large, multisheeted Fermi surfaces. By combining de Haasâ€“van Alphen spectroscopy with density functional theory and band-topology calculations, here we show that the non-symmorphic symmetries<jats:sup>10â€“17</jats:sup> in chiral, ferromagnetic manganese silicide (MnSi) generate nodal planes (NPs)<jats:sup>11,12</jats:sup>, which enforce topological protectorates (TPs) with substantial Berry curvatures at the intersection of the NPs with the Fermi surface (FS) regardless of the complexity of the FS. We predict that these TPs will be accompanied by sizeable Fermi arcs subject to the direction of the magnetization. Deriving the symmetry conditions underlying topological NPs, we show that the 1,651 magnetic space groups comprise 7 grey groups and 26 black-and-white groups with topological NPs, including the space group of ferromagnetic MnSi. Thus, the identification of symmetry-enforced TPs, which can be controlled with a magnetic field, on the FS of MnSi suggests the existence of similar propertiesâ€”amenable for technological exploitationâ€”in a large number of materials.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 374-379