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Peer-reviewedCC BYNature Communications

Electron ptychography reveals correlated lattice vibrations at atomic resolution

  • Anton Gladyshev1
  • Benedikt Haas2
  • Thomas C. Pekin2
  • Tara M. Boland3,4
  • Marcel Schloz2
  • Peter Rez5
  • Christoph T. Koch2
5 affiliations
  1. 1Department of Physics, Humboldt-Universität zu Berlin & Center for the Science of Materials Berlin, Berlin, Germany. [email protected]
  2. 2Department of Physics, Humboldt-Universität zu Berlin & Center for the Science of Materials Berlin, Berlin, Germany
  3. 3Computational Atomic-Scale Materials Design (CAMD), Technical University of Denmark, Kgs. Lyngby, Denmark
  4. 4School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, AZ, USA
  5. 5Department of Physics, Arizona State University, Tempe, AZ, USA
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Abstract

Electron Ptychography is a computational imaging technique capable of performing phase retrieval at atomic resolution. Here we introduce the CAVIAR framework (Correlated Atomic Vibration Imaging with sub-Angstrom Resolution) that reveals spatial correlations in atomic displacements at the atomic scale. Using realistically simulated data for a symmetric Σ 9 grain boundary in silicon and experimental data of a hexagonal boron nitride bicrystal, we observe correlations between atomic movements in the range of 10-20 pm at room temperature in agreement with our expectation. From only the atomic masses and temperature as input, we obtain frequencies of the longitudinal and transverse acoustic and optic phonons from just a few nm 3 volume, in agreement with inelastic neutron scattering. This ability to spatially resolve correlated atomic motion distinguishes CAVIAR and positions it as a complementary tool to vibrational electron energy loss spectroscopy for exploring atom dynamics at the finest scale.

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Cite

BibTeXRIS
BibTeX
@article{gladyshev2026electron,
  title = {{Electron ptychography reveals correlated lattice vibrations at atomic resolution}},
  author = {Anton Gladyshev and Benedikt Haas and Thomas C. Pekin and Tara M. Boland and Marcel Schloz and Peter Rez and Christoph T. Koch},
  journal = {Nature Communications},
  year = {2026},
  month = jun,
  doi = {10.1038/s41467-026-74135-4},
  url = {https://doi.org/10.1038/s41467-026-74135-4},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Electron ptychography reveals correlated lattice vibrations at atomic resolution
AU  - Anton Gladyshev
AU  - Benedikt Haas
AU  - Thomas C. Pekin
AU  - Tara M. Boland
AU  - Marcel Schloz
AU  - Peter Rez
AU  - Christoph T. Koch
PY  - 2026
DA  - 2026/06/10
JO  - Nature Communications
DO  - 10.1038/s41467-026-74135-4
UR  - https://doi.org/10.1038/s41467-026-74135-4
AB  - Electron Ptychography is a computational imaging technique capable of performing phase retrieval at atomic resolution. Here we introduce the CAVIAR framework (Correlated Atomic Vibration Imaging with sub-Angstrom Resolution) that reveals spatial correlations in atomic displacements at the atomic scale. Using realistically simulated data for a symmetric Σ 9 grain boundary in silicon and experimental data of a hexagonal boron nitride bicrystal, we observe correlations between atomic movements in the range of 10-20 pm at room temperature in agreement with our expectation. From only the atomic masses and temperature as input, we obtain frequencies of the longitudinal and transverse acoustic and optic phonons from just a few nm 3 volume, in agreement with inelastic neutron scattering. This ability to spatially resolve correlated atomic motion distinguishes CAVIAR and positions it as a complementary tool to vibrational electron energy loss spectroscopy for exploring atom dynamics at the finest scale.
SN  - 2041-1723
ER  -