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research article
Observation of a two-dimensional Fermi surface and Dirac dispersion in YbMnSb2
January 10, 2018
We present the crystal structure, electronic structure, and transport properties of the material YbMnSb2, a candidate system for the investigation of Dirac physics in the presence of magnetic order. Our measurements reveal that this system is a low-carrier-density semimetal with a two-dimensional Fermi surface arising from a Dirac dispersion, consistent with the predictions of density-functional-theory calculations of the antiferromagnetic system. The low temperature resistivity is very large, suggesting that scattering in this system is highly efficient at dissipating momentum despite its Dirac-like nature.
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Type
research article
Authors
Kealhofer, Robert
•
Jang, Sooyoung
•
Griffin, Sinéad M.
•
John, Caolan
•
Benavides, Katherine A.
•
Doyle, Spencer
•
Helm, T.
•
Moll, Philip J. W.
•
Neaton, Jeffrey B.
•
Chan, Julia Y.
Publication date
2018-01-10
Published in
Volume
97
Issue
4
Article Number
045109
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
August 27, 2018