Chiral symmetry breaking and topological charge of zigzag graphene nanoribbons

HC Lee, SRE Yang - New Journal of Physics, 2024 - iopscience.iop.org
Interacting quasi-one-dimensional zigzag graphene nanoribbons display gapped edge
excitations. Although the self-consistent Hartree–Fock fields break chiral symmetry, our work …

Topological surface state in epitaxial zigzag graphene nanoribbons

TTN Nguyen, N de Vries, H Karakachian… - Nano Letters, 2021 - ACS Publications
Protected and spin-polarized transport channels are the hallmark of topological insulators,
coming along with an intrinsic strong spin–orbit coupling. Here we identified such …

Topological properties of gapped graphene nanoribbons with spatial symmetries

KS Lin, MY Chou - Nano Letters, 2018 - ACS Publications
To date, almost all of the discussions on topological insulators (TIs) have focused on two-
and three-dimensional systems. One-dimensional (1D) TIs manifested in real materials, in …

Topological band engineering of graphene nanoribbons

DJ Rizzo, G Veber, T Cao, C Bronner, T Chen, F Zhao… - Nature, 2018 - nature.com
Topological insulators are an emerging class of materials that host highly robust in-gap
surface or interface states while maintaining an insulating bulk,. Most advances in this field …

Quantum phase transitions and topological proximity effects in graphene nanoribbon heterostructures

G Zhang, X Li, G Wu, J Wang, D Culcer, E Kaxiras… - Nanoscale, 2014 - pubs.rsc.org
Topological insulators are bulk insulators that possess robust chiral conducting states along
their interfaces with normal insulators. A tremendous research effort has recently been …

Chiral magnetic interactions in graphene nanoribbons on topological insulator substrates

W Zhang, F Hajiheidari, R Mazzarello - Physical Review B, 2017 - APS
It is known that the interplay between strong spin-orbit coupling and broken inversion
symmetry can lead to chiral configurations in low-dimensional magnetic systems deposited …

Topological phases, local magnetic moments, and spin polarization triggered by C 558-line defects in armchair graphene nanoribbons

NJ Yang, WT Guo, H Yang, Z Huang… - Physical Chemistry …, 2024 - pubs.rsc.org
The topological and magnetic properties induced by topological defects in graphene have
attracted attention. Here, we study a novel topological defect structure for graphene …

Möbius graphene strip as a topological insulator

ZL Guo, ZR Gong, H Dong, CP Sun - Physical Review B—Condensed Matter …, 2009 - APS
We study the electronic properties of the Möbius graphene strip with a zigzag edge. We
show that such a graphene strip behaves as a topological insulator with a gapped bulk and …

Higher-order topological insulator in twisted bilayer graphene

MJ Park, Y Kim, GY Cho, SB Lee - Physical review letters, 2019 - APS
Higher-order topological insulators are newly proposed topological phases of matter, whose
bulk topology manifests as localized modes at two-or higher-dimensional lower boundaries …

Topologically protected edge and confined states in finite armchair graphene nanoribbons and their junctions

MP López-Sancho, MC Muñoz - Physical Review B, 2021 - APS
Topologically protected edge and junction states, previously predicted, have recently been
observed in armchair graphene nanoribbon (AGNR) heterojunctions. Here, via tight-binding …