Twisted Bilayer Graphene : Moiré with a Twist

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)5923-5927
Journal / PublicationNano Letters
Volume16
Issue number9
Early online date17 Aug 2016
StatePublished - 14 Sep 2016
Externally publishedYes

Abstract

A multiscale model is developed to predict the equilibrium structure of twisted bilayer graphene (tBLG). Two distinct, modified Moiré structures are observed. The breathing mode, stable at large twist angle, has small amplitude (opposite sign) buckling of the two layers. The bending mode is characterized by large amplitude (same sign) buckling of the layers. The latter gives rise to a distorted Moiré pattern consisting of a twisted dislocation structure. The relaxation of the Moiré structure reduces the symmetry and increases the period of the tBLG. On the basis of these results, we derive a quantitative analytical model for the angle dependence of the tBLG energy.

Research Area(s)

  • buckling, dislocation network, graphene structure, Twisted bilayer

Citation Format(s)

Twisted Bilayer Graphene : Moiré with a Twist. / Dai, Shuyang; Xiang, Yang; Srolovitz, David J.

In: Nano Letters, Vol. 16, No. 9, 14.09.2016, p. 5923-5927.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review