< Back to previous page

Publication

Electron collimation at van der Waals domain walls in bilayer graphene

Journal Contribution - e-publication

We show that a domain wall separating single-layer graphene and AA-stacked bilayer graphene (AA-BLG) can be used to generate highly collimated electron beams which can be steered by a magnetic field. Two distinct configurations are studied, namely, locally delaminated AA-BLG and terminated AA-BLG whose terminal edge types are assumed to be either zigzag or armchair. We investigate the electron scattering using semiclassical dynamics and verify the results independently with wave-packet dynamics simulations. We find that the proposed system supports two distinct types of collimated beams that correspond to the lower and upper cones in AA-BLG. Our computational results also reveal that collimation is robust against the number of layers connected to AA-BLG and terminal edges.
Journal: Physical review B
ISSN: 2469-9969
Volume: 100
Publication year:2019
Keywords:A1 Journal article
BOF-keylabel:yes
BOF-publication weight:3
CSS-citation score:1
Authors:International
Authors from:Higher Education
Accessibility:Open