Quantitative structure determination from experimental four-dimensional scanning transmission electron microscopy via the scattering matrix
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
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| _version_ | 1866911023284355072 |
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| author | Terzoudis-Lumsden, Emmanuel W. C. Sadri, Alireza Weyland, Matthew Bourgeois, Laure Ribet, Stephanie M. Varnavides, Georgios Ophus, Colin Petersen, Timothy C. Findlay, Scott D. |
| author_facet | Terzoudis-Lumsden, Emmanuel W. C. Sadri, Alireza Weyland, Matthew Bourgeois, Laure Ribet, Stephanie M. Varnavides, Georgios Ophus, Colin Petersen, Timothy C. Findlay, Scott D. |
| contents | Considerable inroads have recently been made on algorithms to determine the sample potential from four-dimensional scanning transmission electron microscopy data from thick samples where multiple scattering cannot be neglected. This paper further develops the scattering matrix approach to such structure determination. Through simulation, we demonstrate how this approach can be modified to better handle partial spatial coherence, unknown probe defocus, and information from the dark field region. By combining these developments we reconstruct the electrostatic potential of a monolithic SrTiO$_3$ crystal showing good quantitative agreement with the expected structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_21004 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantitative structure determination from experimental four-dimensional scanning transmission electron microscopy via the scattering matrix Terzoudis-Lumsden, Emmanuel W. C. Sadri, Alireza Weyland, Matthew Bourgeois, Laure Ribet, Stephanie M. Varnavides, Georgios Ophus, Colin Petersen, Timothy C. Findlay, Scott D. Materials Science Instrumentation and Detectors Considerable inroads have recently been made on algorithms to determine the sample potential from four-dimensional scanning transmission electron microscopy data from thick samples where multiple scattering cannot be neglected. This paper further develops the scattering matrix approach to such structure determination. Through simulation, we demonstrate how this approach can be modified to better handle partial spatial coherence, unknown probe defocus, and information from the dark field region. By combining these developments we reconstruct the electrostatic potential of a monolithic SrTiO$_3$ crystal showing good quantitative agreement with the expected structure. |
| title | Quantitative structure determination from experimental four-dimensional scanning transmission electron microscopy via the scattering matrix |
| topic | Materials Science Instrumentation and Detectors |
| url | https://arxiv.org/abs/2506.21004 |