Kealhofer, RobertJang, SooyoungGriffin, Sinéad M.John, CaolanBenavides, Katherine A.Doyle, SpencerHelm, T.Moll, Philip J. W.Neaton, Jeffrey B.Chan, Julia Y.Denlinger, J. D.Analytis, James G.2018-08-272018-08-272018-08-272018-01-1010.1103/PhysRevB.97.045109https://infoscience.epfl.ch/handle/20.500.14299/147962We 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.text::journal::journal article::research article