Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session K08: Topological Insulators: Transport and Optical properties
8:00 AM–10:48 AM,
Wednesday, March 7, 2018
LACC Room: 153C
Sponsoring Unit: DCMP
Abstract: K08.00011 : Topological semimetal realized in a specific honeycomb lattice
10:00 AM–10:12 AM
(Huazhong University of Science & Technology)
As one type of the elementary particles in standard mode, the realization of Weyl fermions in condensed matter has attracted increasing interest. However, most discovered Weyl semimetals show complicate electronic structures, which lead to many confusions for their essential physics. Here we report firstly that fruitful topological phases can be realized in a specific honeycomb lattice, including ideal Weyl semimetal, 3D strong topological insulator, nodalline semimetal, and a novel semimetal consisting of both Weyl nodes and nodal-lines. Guiding by this model, we demonstrate that GdSI is the long-pursuing ideal Weyl semimetal with the least Weyl nodes residing at the Fermi level, and LuSI (YSI) is a 3D strong topological insulator with the right-handed helical surface states. Our work paves a new way to explore the ideal topological semimetals, and provides a good platform to research the physics of the Weyl semimetal and the related device design.
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