Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session K03: Magnetic Topological Materials I
3:00 PM–6:00 PM,
Tuesday, March 5, 2024
Room: L100C
Sponsoring
Unit:
DMP
Chair: Weiwei Xie, Michigan State University
Abstract: K03.00005 : Discovery of an antiferromagnetic nodal line*
4:36 PM–4:48 PM
Presenter:
Xian Yang
(Princeton University)
Authors:
Xian Yang
(Princeton University)
Yueh-Ting Yao
(National Cheng Kung University)
Pengyu Zheng
(Beijing Normal University)
Shuyue Guan
(Peking University)
Huibin Zhou
(Peking University)
Che-Min Lin
(National Cheng Kung University)
Tyler A. Cochran
(Princeton University)
Zijia Cheng
(Princeton University)
Xiaoting Zhou
(Northeastern University)
Jia-Xin Yin
(Southern University of Science and Technology)
Arun Bansil
(Northeastern University)
Zhiping Yin
(Beijing Normal Univ)
Shuang Jia
(Peking Univ)
Tay-Rong Chang
(Natl Cheng Kung Univ)
Zahid Hasan
(Princeton University)
While topological states have been observed in many non-magnetic materials, magnetic topological compounds with gapless crossings are rarely studied. Through state-of-the-art angle-resolved photoemission spectroscopy and density functional theory, we visualize an antiferromagnetic nodal line in an antiferromagnet. This fourfold degenerate nodal line is gapless even when spin-orbit coupling and magnetism are considered. We further demonstrate that it is enforced by the combination of magnetism, space-time inversion symmetry and nonsymmorphic lattice symmetry. Finally, we clearly observe the corresponding drumhead surface states. Our work greatly expand beyond the existing horizon of topological materials, introducing a new family with novel magnetic topological phases.
*The ARPES and theoretical work were supported by the US DOE under the Basic Energy Sciences program (grant number DOE/BES DE-FG-02-05ER46200; M.Z.H.). Use of the Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700