Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session U54: Topological Crystalline Phases
2:30 PM–4:54 PM,
Thursday, March 5, 2020
Room: Mile High Ballroom 2A
Sponsoring
Unit:
DCMP
Abstract: U54.00006 : Topology of chiral insulators
Presenter:
Marcelo Guzmán
(Physique, Ecole Normale Superieure de Lyon)
Authors:
Marcelo Guzmán
(Physique, Ecole Normale Superieure de Lyon)
Denis Bartolo
(Physique, Ecole Normale Superieure de Lyon)
David Carpentier
(Physique, Ecole Normale Superieure de Lyon)
Firstly, we show that the topology of waves in chiral materials is naturally encoded in their chiral polarization, which quantifies the spatial imbalance of localized Wannier states between the two sub-lattices. Secondly, we demonstrate that the chiral polarization originates both from topological properties of the Hamiltonian and of the frame on which this Hamiltonian is defined. Our results elucidate a long-standing ambiguity on the topological characterization of the simplest, and probably oldest example of a topological state: the Su-Schrieffer-Hegger (SSH) chain. Finally, we establish a generalized bulk-boundary correspondence for chiral systems and show how to effectively use the concept of chiral polarization to predict the existence of interfacial states at the boundary of chiral insulators.
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. |
© 2025 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