An influence of parallel electric field on the dispersion relation of graphene – a new route to Dirac logics

Jakub Sołtys 1Stanisław Krukowski 1,2Jolanta Borysiuk 3Jacek Piechota 1

1. University of Warsaw, Interdisciplinary Centre for Mathematical and Computational Modelling (ICM), Pawinskiego 5a, Warsaw 02-106, Poland
2. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland
3. Faculty of Physics, University of Warsaw (FUW), Hoża, Warsaw PL-00681, Poland

Abstract

Ab initio density functional theory (DFT) simulations were used to investigate an influence of electric field, parallel to single and multilayer graphene on its electron dispersion relations close to K point. It was shown that for both single layer and AAAA stacking multilayer graphene under influence of parallel field the dispersion relations transform to nonlinear, i.e. emergence of mass. The effect, associated with the hexagonal symmetry breaking, opens new route to high speed transistors and logical devices working in Dirac regime. The implementation of such device is presented.

This work has been supported by Polish Ministry of Science and Higher
Education within the SiCMAT Project financed under the European Founds for Regional  Development (Contract No. UDAPOIG. 01.03.01-14-155/09) and partly supported by the Polish National Science Centre on the basis of the decision No. DEC-2012/05/B/ST3/03113

 

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Presentation: Oral at 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17, Topical Session 7, by Jakub Sołtys
See On-line Journal of 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17

Submitted: 2013-05-07 22:18
Revised:   2013-08-01 05:07