ELFT HÍRADÓ

[tcsaba <tcsaba AT eik.bme.hu>]

                 M E G H Í V Ó - I N V I T A T I O N

    Seminar Series of the Department of Theoretical Physics at the
           Budapest University of Technology and Economics


                          Péter Süle
                         (MTA EK MFA)


       Modelling moiré superlattice and gap opening in graphene


Our aim was to reproduce various properties of moiré superlattice (MSL) 
of 2D materials on Au(111) support. Results will be reported on 
electronic structure, topography and lattice distortions of various 
moiré superstructures. In particular, special attention is paid to the 
structural reproduction of MSL recorded by STM using our DFT adaptive 
classical force fields [1] as well as standard DFT calculations. Band 
structure and DOS of various strain induced distorted nanostructures 
will be presented for different corrugated systems such as nanodomes. 
The possible physics behind gap opening will also be discussed [3]. We 
also outline results on the convexity of graphene MSL on Au(111) [2] 
focusing on the nanoscale coexitence of convex-concave MSL. We also 
explain theoretically the experimentally observed anomalously large MSL 
of graphene on Au(111) as nearly commensurate superstructures [4].

References:
[1] P. Süle, M. Szendrő, Modell. Simul. Mater. Sci. Eng. 23, 25001 
(2015), P. Süle et. al., Carbon 77, 1082. (2014).
[2] P. Süle et al., Nano Lett. 15, 8295. (2015)
[3] P. Süle et al., unpublished (2017)
[4] A. Pálinkás et al. Carbon 107, 792. (2016)


Időpont: 2017. március 24. péntek, 10:15
Helyszín: BME Fizikai Intézet, Elméleti Fizika Tanszék,
Budafoki út 8. F-épület, III lépcsőház, szemináriumi szoba