Emergence of Fermi arcs due to magnetic splitting in an antiferromagnet

dc.contributor.author Schrunk,, Benjamin
dc.contributor.author Kushnirenko, Yevhen
dc.contributor.author Kuthanazhi, Brinda
dc.contributor.author Ahn, Junyeong
dc.contributor.author Wang, Lin-Lin
dc.contributor.author O'Leary, Evan
dc.contributor.author Lee, Kyungchan
dc.contributor.author Eaton, Andrew
dc.contributor.author Fedorov, Alexander
dc.contributor.author Lou, Rui
dc.contributor.author Voroshnin, Vladimir
dc.contributor.author Clark, Oliver J.
dc.contributor.author Sanchez-Barriga, Jaime
dc.contributor.author Bud'ko, Sergey L.
dc.contributor.author Slager, Robert-Jan
dc.contributor.author Canfield, Paul
dc.contributor.author Kaminski, Adam
dc.contributor.author Canfield, Paul
dc.contributor.department Physics and Astronomy
dc.contributor.department Ames Laboratory
dc.date.accessioned 2022-04-28T22:58:43Z
dc.date.available 2022-04-28T22:58:43Z
dc.date.issued 2022-03-23
dc.description.abstract The Fermi surface plays an important role in controlling the electronic, transport and thermodynamic properties of materials. As the Fermi surface consists of closed contours in the momentum space for well-defined energy bands, disconnected sections known as Fermi arcs can be signatures of unusual electronic states, such as a pseudogap1. Another way to obtain Fermi arcs is to break either the time-reversal symmetry2 or the inversion symmetry3 of a three-dimensional Dirac semimetal, which results in formation of pairs of Weyl nodes that have opposite chirality4, and their projections are connected by Fermi arcs at the bulk boundary3,5,6,7,8,9,10,11,12. Here, we present experimental evidence that pairs of hole- and electron-like Fermi arcs emerge below the Neel temperature (TN) in the antiferromagnetic state of cubic NdBi due to a new magnetic splitting effect. The observed magnetic splitting is unusual, as it creates bands of opposing curvature, which change with temperature and follow the antiferromagnetic order parameter. This is different from previous theoretically considered13,14 and experimentally reported cases15,16 of magnetic splitting, such as traditional Zeeman and Rashba, in which the curvature of the bands is preserved. Therefore, our findings demonstrate a type of magnetic band splitting in the presence of a long-range antiferromagnetic order that is not readily explained by existing theoretical ideas.
dc.description.comments This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at DOI: 10.1038/s41586-022-04412-x. Copyright 2022 The Author(s). Posted with permission.
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/avVOlAdr
dc.language.iso en
dc.publisher Springer Nature
dc.source.uri https://doi.org/10.1038/s41586-022-04412-x *
dc.title Emergence of Fermi arcs due to magnetic splitting in an antiferromagnet
dc.type Article
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
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