Edge on-site potential effects in a honeycomb topological magnon insulator

Avatar
Poster
Voices Powered byElevenlabs logo
Connected to paperThis paper is a preprint and has not been certified by peer review

Edge on-site potential effects in a honeycomb topological magnon insulator

Authors

Pierre A. Pantaleón, Y. Xian

Abstract

The difference between the edge on-site potential and the bulk values in a magnonic topological honeycomb lattice leads to the formation of edge states in a bearded boundary, and the same difference is found to be the responsible for the absence of edge states in a zig-zag termination. In a finite lattice, the intrinsic on-site interactions along the boundary sites generate an effective defect and Tamm-like edge states appear for both zig-zag and bearded terminations. If a non-trivial gap is induced, Tamm-like and topologically protected edge states appear in the band structure. The effective defect can be strengthened by an external on-site potential and the dispersion relation, velocity and magnon-density of the edge states become tunable.

Follow Us on

0 comments

Add comment