Wave-optical Properties and Spatial Resolution in Point-projection Microscopy and Holography
- PC Online Talk
- Date: Sep 24, 2020
- Time: 11:00 AM (Local Time Germany)
- Speaker: Dr. Faruk Krecinic
- FHI Department PC

Early publications claimed it would be possible to achieve atomic scale
resolution with this technique, but so far the best reported spatial
resolution is 7-8 Å. The lack of atomic resolution was mainly attributed
to environmental disturbances, i.e. mechanical vibrations. However,
using a semi-classical model we show that there are inherent resolution
limits due to the combined effect of the finite spatial coherence length
of the emitted electrons and electron-optical aberrations. The
semi-classical model introduced here provides a general framework for
simulating the wave-optical properties of (photo)electron sources used
in electron microscopy, and evaluating the effect of the spatial
coherence length, source geometry and aberrations on the emitted
electron beam.
[1] T. Latychevskaia, et al., Nano Letters, 16(9), 5469–5474, (2016).
[2] M. Müller, et al., Nat. Comm., 5, 5292 (2014).
[3] F. Krečinić, et al., arXiv:1803.01766, (2018).
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