Topological end states and Zak phase of rectangular armchair ribbon

We consider the end states of a half-filled rectangular armchair graphene ribbon (RAGR) in a staggered potential. Taking electron–electron interactions into account we find that, as the strength of the staggered potential varies, three types of couplings between the end states can occur: antiferroma...

Full description

Saved in:
Bibliographic Details
Published in:Annals of physics 2017-10, Vol.385, p.688-694
Main Authors: Jeong, Y.H., Eric Yang, S.-R.
Format: Article
Language:English
Subjects:
Edge magnetization
End state
Fractional charge
Graphene nanosystem
Polarization
Zak phase
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We consider the end states of a half-filled rectangular armchair graphene ribbon (RAGR) in a staggered potential. Taking electron–electron interactions into account we find that, as the strength of the staggered potential varies, three types of couplings between the end states can occur: antiferromagnetic without or with spin splitting, and paramagnetic without spin-splitting. We find that a spin-splitting is present only in the staggered potential region 0
ISSN:0003-4916
1096-035X
DOI:10.1016/j.aop.2017.08.019