Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 14: Graphene
TT 14.14: Vortrag
Montag, 1. April 2019, 18:45–19:00, H22
Quantum transport in graphene/hBN Moiré superlattices: A numerical aspect — •Szu-Chao Chen1, Klaus Richter2, and Ming-Hao Liu1 — 1Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan — 2Institute for Theoretical Physics, University of Regensburg, D-93040 Regensburg, Germany
Transport properties of graphene/hBN Moiré superlattices are studied by performing quantum transport simulations based on the scalable tight-binding model [1], combined with calculations of miniband structures and density of states within the continuum model. Both of the two-terminal conductance simulation and the calculated spectrum of the density of states reveal extra dips corresponding to satellite Dirac points due to the implemented model superlattice potential. Despite the simplicity of the adopted model which takes into account only the scalar potential term, our preliminary results already capture main features of the Moiré superlattice, and therefore shed light on further simulating more complicated transport experiments involving graphene/hBN samples, such as Fabry-Pérot interference [2] and transverse magnetic focusing [3] in the presence of Moiré superlattice potential.
M.-H. Liu et al., Phys. Rev. Lett. 114, 036601 (2015)
C. Handschin et al., Nano Lett. 17(1), 328-333 (2017)
M. Lee et al., Science 353(6307), 1526-1529 (2016)