Electron holographic mapping of structural reconstruction at mono- and bilayer steps of h-BN

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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en

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7

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Physical Review Research, Volume 5, issue 3, pp. 1-7

Abstract

Here, by making use of medium and high resolution autocorrected off-axis electron holography, we directly probe the electrostatic potential as well as in-plane structural reconstruction at edges and steps in multilayer hexagonal boron nitride. In combination with ab initio calculations, the data allows revealing the formation of folded zigzag edges at steps comprising two monolayers and their absence at monolayer steps.

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Funding Information: The authors acknowledge funding from DFG SFB 1415, Project ID No. 417590517. We thank the Center for Information Services and High-Performance Computing (ZIH) at TU Dresden for generous allocations of computer time. The authors gratefully acknowledge the Gauss Centre for Supercomputing e.V. for funding this project by providing computing time through the John von Neumann Institute for Computing (NIC) on the GCS Supercomputer JUWELS at Jülich Supercomputing Centre (JSC). We further thank HLRS, Stuttgart, Germany, and TU Dresden Cluster “Taurus” for generous grants of CPU time. Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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Subakti, S, Daqiqshirazi, M, Wolf, D, Linck, M, Kern, F L, Jain, M, Kretschmer, S, Krasheninnikov, A V, Brumme, T & Lubk, A 2023, 'Electron holographic mapping of structural reconstruction at mono- and bilayer steps of h-BN', Physical Review Research, vol. 5, no. 3, 033137, pp. 1-7. https://doi.org/10.1103/PhysRevResearch.5.033137