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arXiv:1907.12974 (cond-mat)
[Submitted on 30 Jul 2019 (v1), last revised 15 Oct 2023 (this version, v2)]

Title:Direct Imaging of Charge Redistribution due to Bonding at Atomic Resolution via Electron Ptychography

Authors:Gerardo T. Martinez, Benjamin X. Shi, Timothy C. Naginey, Lewys Jones, Colum M. O'Leary, Timothy J. Pennycook, Rebecca J. Nicholls, Jonathan R. Yates, Peter D. Nellist
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Abstract:Phase imaging in electron microscopy is sensitive to the local potential, including charge redistribution from bonding. We demonstrate that electron ptychography provides the necessary sensitivity to detect this subtle effect by directly imaging the charge redistribution in single layer boron nitride. Residual aberrations can be measured and corrected post-collection, and simultaneous atomic number contrast imaging provides unambiguous sub-lattice identification. Density functional theory calculations confirm the detection of charge redistribution.
Subjects: Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:1907.12974 [cond-mat.mtrl-sci]
  (or arXiv:1907.12974v2 [cond-mat.mtrl-sci] for this version)
  https://doi.org/10.48550/arXiv.1907.12974

Submission history

From: Peter Nellist [view email]
[v1] Tue, 30 Jul 2019 14:19:37 UTC (2,501 KB)
[v2] Sun, 15 Oct 2023 17:36:02 UTC (1,639 KB)
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