Journal Article

PUBDB-2017-00225

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structure retrieval with fast electrons using segmented detectors

Brown, H. G. ; D'Alfonso, A. J. ; Chen, Z. ; Morgan, A. J.CFEL*DESY* ; Weyland, M. ; Zheng, C. ; Fuhrer, M. S. ; Findlay, S. D. ; Allen, L. J. (Corresponding author)

2016
APS Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.93.134116  doi:10.3204/PUBDB-2017-00225

Abstract: We introduce an algorithm for the reconstruction of the complex transmission function of a specimen using segmented detectors in scanning transmission electron microscopy geometry. The phase of the transmission function can be related to magnetic and electric fields within the specimen and is sensitive to lighter elements. The technique is demonstrated for simulated data and also using experimental datasets taken from a MoS$_2$ monolayer and a SrTiO$_3$ crystal. We present an extension to the algorithm to account for uncertainties in the illuminating probe. The algorithm can be implemented using fast Fourier transforms, and this provides the possibility of reconstructing specimen transmission functions in real time.

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Contributing Institute(s):

1. CFEL-Coherent X-Ray Imaging (FS-CFEL-1)
2. FS-CFEL-1 (Group Leader: Henry Chapman) (CFEL-I)

Research Program(s):

1. 6215 - Soft Matter, Health and Life Sciences (POF3-621) (POF3-621)

Experiment(s):

1. Experiments at CFEL

Appears in the scientific report 2016

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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