Topologically Protected Edge States in Triangular Lattices

Autor:	Davis, Robert J., Zhou, Yun, Bisharat, Dia'aaldin J., Bandaru, Prabhakar R., Sievenpiper, Daniel F.
Rok vydání:	2022
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.106.165403
Popis:	We describe the possibility for topologically robust edge states existing on interfaces of triangular lattices which are supported by rotational symmetries that are sensitive to boundary conditions. Such states are trivial from the perspective of Berry curvature, but result instead from an interplay between crystalline symmetries and finite boundary effects. Regardless, we show such states are in a distinct topological phase, provided the gauge-dependent symmetries are maintained. Such a model describes a number of recent bosonic experimental demonstrations on triangular lattices, the physics for which has thus far eluded explanation. Comment: 12 pages, 10 figures. Accepted to Physical Review B
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2201.03495 Zobrazit plný text záznamu View this record from Arxiv