Journal article
Structure Retrieval at Atomic Resolution in the Presence of Multiple Scattering of the Electron Probe
HG Brown, Z Chen, M Weyland, C Ophus, J Ciston, LJ Allen, SD Findlay
Physical Review Letters | AMER PHYSICAL SOC | Published : 2018
Abstract
The projected electrostatic potential of a thick crystal is reconstructed at atomic resolution from experimental scanning transmission electron microscopy data recorded using a new generation fast-readout electron camera. This practical and deterministic inversion of the equations encapsulating multiple scattering that were written down by Bethe in 1928 removes the restriction of established methods to ultrathin (-50 Å) samples. Instruments already coming on line can overcome the remaining resolution-limiting effects in this method due to finite probe-forming aperture size, spatial incoherence, and residual lens aberrations.
Grants
Awarded by U.S. Department of Energy
Funding Acknowledgements
This research was supported under the Australian Research Councils Discovery Projects funding scheme (Project No. DP140102538). We acknowledge support from a Network of Excellence grant from Monash University, the use of facilities within the Monash Centre for Electron Microscopy, and the Titan instrument funded under Australian Research Council's LE0454186. Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. J. C. acknowledges additional support from the U.S. Department of Energy Early Career Research Program. The software used to carry out the S-matrix inversion is available on request.