Density of States of Twisted Bilayer Graphene at Low Energy

DOI

10.2991/icp-14.2014.5How to use a DOI?

Keywords

Density of States, Twisted Bilayer Graphene, Low Energy.

Abstract

We report the calculation of the Density of States (DOS) in Twisted Bilayer Graphene (TBG) system for low energy range near Fermi level using commensurate rotation of 1.160, 1.790 and 3.480. We obtain a logarithmic behaviour of DOS showing that van Hove Singularities (VHS) are occurred in this system and its position depends on twisted angle. This behaviour coming from the saddle points (SP) of band dispersion of TBG. The position of VHS will move away from Fermi level along with the increase of twisted angle. This result can be used to calculate others physical quantities such as optical conductivity or critical temperature of superconductivity that may occur in TBG.

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Muhammad Nasruddin Manaf
AU  - Iman Santoso
AU  - Arief Hermanto
PY  - 2014/10
DA  - 2014/10
TI  - Density of States of Twisted Bilayer Graphene at Low Energy
BT  - Proceedings of the 2014 International Conference on Physics
PB  - Atlantis Press
SP  - 19
EP  - 21
SN  - 2352-541X
UR  - https://doi.org/10.2991/icp-14.2014.5
DO  - 10.2991/icp-14.2014.5
ID  - Manaf2014/10
ER  -