This title appears in the Scientific Report :
2019
Please use the identifier:
http://dx.doi.org/10.1016/j.ultramic.2019.112815 in citations.
Please use the identifier: http://hdl.handle.net/2128/23395 in citations.
Imaging properties of hemispherical electrostatic energy analyzers for high resolution momentum microscopy
Imaging properties of hemispherical electrostatic energy analyzers for high resolution momentum microscopy
Hemispherical deflection analyzers are the most widely used energy filters for state-of-the-art electron spectroscopy. Due to the high spherical symmetry, they are also well suited as imaging energy filters for electron microscopy. Here, we review the imaging properties of hemispherical deflection a...
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Personal Name(s): | Tusche, Christian (Corresponding author) |
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Chen, Ying-Jiun / Schneider, Claus M. / Kirschner, Jürgen | |
Contributing Institute: |
Elektronische Eigenschaften; PGI-6 |
Published in: | Ultramicroscopy, 206 (2019) S. 112815 - |
Imprint: |
Amsterdam
Elsevier Science
2019
|
DOI: |
10.1016/j.ultramic.2019.112815 |
PubMed ID: |
31325896 |
Document Type: |
Journal Article |
Research Program: |
Controlling Spin-Based Phenomena |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/23395 in citations.
Hemispherical deflection analyzers are the most widely used energy filters for state-of-the-art electron spectroscopy. Due to the high spherical symmetry, they are also well suited as imaging energy filters for electron microscopy. Here, we review the imaging properties of hemispherical deflection analyzers with emphasis on the application for cathode lens microscopy. In particular, it turns out that aberrations, in general limiting the image resolution, cancel out at the entrance and exit of the analyzer. This finding allows more compact imaging energy filters for momentum microscopy or photoelectron emission microscopy. For instance, high resolution imaging is possible, using only a single hemisphere. Conversely, a double pass hemispherical analyzer can double the energy dispersion, which means it can double the energy resolution at certain transmission, or can multiply the transmission at certain energy resolution. |