Regensburg 2022 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 35: Nanomaterials: Structure & Properties
MM 35.1: Vortrag
Donnerstag, 8. September 2022, 15:45–16:00, H46
Structural and Electronic Reconstruction of Hexagonal Boron Nitride Interlayers Steps — •Subakti Subakti1,2, Mohammadreza DaqiqShirazi3, Felix Kern1,2, Daniel Wolf1, Thomas Brumme3, Bernd Büchner1,2, and Axel Lubk1 — 1Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstraße 20, 01069 Dresden, Germany — 2Institut für Festkörperphysik, TU Dresden, D-01062 Dresden, Germany — 3Chair of Theoretical Chemistry, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden, Germany
The electrostatic potential of condensed matter provides not only atomic structure, but also the electronic structure that underlies the chemical bonding formation of atoms within one molecule. Off-axis electron holography (EH) technique allows us to probe the volume-averaged electrostatic potential (in crystalline materials over the unit cell) of the specimen with respect to a vacuum reference region. Therefore, a conjunction EH medium and high resolution data analysis and electrostatic potential based ab-initio calculation will be powerful for simultaneous atomic scale reconstruction and imaging. Visible projected potential jump at the edges of two adjacent monolayers hexagonal boron nitride (h-BN) will be addressed here as our data analysis suggest that it could be signature for the increased charge delocalization due to the formation of an additional covalent bond of the 2p orbitals in the rolled-up edge.