Emergence of Fermi arcs due to magnetic splitting in an antiferromagnet

Benjamin Schrunk, Yevhen Kushnirenko, Brinda Kuthanazhi, Junyeong Ahn, Lin-Lin Wang, Evan O’Leary, Kyungchan Lee, Andrew Eaton, Alexander Fedorov, Rui Lou, Vladimir Voroshnin, Oliver J. Clark, Jaime Sánchez-Barriga, Sergey L. Bud’ko, Robert-Jan Slager (), Paul C. Canfield () and Adam Kaminski ()
Additional contact information
Benjamin Schrunk: Ames Laboratory
Yevhen Kushnirenko: Ames Laboratory
Brinda Kuthanazhi: Ames Laboratory
Junyeong Ahn: Harvard University
Lin-Lin Wang: Ames Laboratory
Evan O’Leary: Ames Laboratory
Kyungchan Lee: Ames Laboratory
Andrew Eaton: Ames Laboratory
Alexander Fedorov: Leibniz Institute for Solid State and Materials Research
Rui Lou: Leibniz Institute for Solid State and Materials Research
Vladimir Voroshnin: Helmholtz-Zentrum Berlin für Materialien und Energie
Oliver J. Clark: Helmholtz-Zentrum Berlin für Materialien und Energie
Jaime Sánchez-Barriga: Helmholtz-Zentrum Berlin für Materialien und Energie
Sergey L. Bud’ko: Ames Laboratory
Robert-Jan Slager: Harvard University
Paul C. Canfield: Ames Laboratory
Adam Kaminski: Ames Laboratory

Nature, 2022, vol. 603, issue 7902, 610-615

Abstract: 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 boundary3,5–12. 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.

Date: 2022
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/s41586-022-04412-x Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:603:y:2022:i:7902:d:10.1038_s41586-022-04412-x

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/s41586-022-04412-x

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().