Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session K10: Dirac/Weyl Semimetals -- Magnetism
8:00 AM–11:00 AM,
Wednesday, March 7, 2018
LACC Room: 301B
Sponsoring Units: DMP GMAG
Chair: Fazel Tafti, Universite de Sherbrooke
Abstract: K10.00009 : Antiferromagnetic Topological Semimetals in Three Dimensions*
10:00 AM–10:12 AM
We study three-dimensional topological semimetals with magnetic ordering and strong spin-orbit interaction. Such topological semimetals include Dirac semimetals (DSMs) and nodal line semimetals (NLSMs). Two distinct classes of magnetic NLSMs are proposed. The first class is band-inversion NLSM where the accidental line node is induced by band inversion and locally protected by glide mirror plane and the combined time-reversal and inversion symmetries. This can be viewed as a trivial stacking of the two-dimensional antiferromagnetic Dirac semimetals. The second class is essential NLSM where the nodal features are filling enforced by specific magnetic symmetry group. Similar classification also applies to magnetic DSMs. Concrete tight-binding models for magnetic NLSMs and DSMs which belong to these two different classes are also provided.
*This work is supported by the National Thousand-Young-Talents Program.
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700