Current opinion on the prospect of mapping electronic orbitals in the transmission electron microscope: State of the art, challenges and perspectives.
chemical bonding
convergent beam electron diffraction
core‐level spectroscopy
electron energy‐loss spectroscopy
electronic orbital
fine structures
solid state
transmission electron microscopy
Journal
Journal of microscopy
ISSN: 1365-2818
Titre abrégé: J Microsc
Pays: England
ID NLM: 0204522
Informations de publication
Date de publication:
31 May 2024
31 May 2024
Historique:
revised:
03
05
2024
received:
05
02
2024
accepted:
08
05
2024
medline:
31
5
2024
pubmed:
31
5
2024
entrez:
31
5
2024
Statut:
aheadofprint
Résumé
The concept of electronic orbitals has enabled the understanding of a wide range of physical and chemical properties of solids through the definition of, for example, chemical bonding between atoms. In the transmission electron microscope, which is one of the most used and powerful analytical tools for high-spatial-resolution analysis of solids, the accessible quantity is the local distribution of electronic states. However, the interpretation of electronic state maps at atomic resolution in terms of electronic orbitals is far from obvious, not always possible, and often remains a major hurdle preventing a better understanding of the properties of the system of interest. In this review, the current state of the art of the experimental aspects for electronic state mapping and its interpretation as electronic orbitals is presented, considering approaches that rely on elastic and inelastic scattering, in real and reciprocal spaces. This work goes beyond resolving spectral variations between adjacent atomic columns, as it aims at providing deeper information about, for example, the spatial or momentum distributions of the states involved. The advantages and disadvantages of existing experimental approaches are discussed, while the challenges to overcome and future perspectives are explored in an effort to establish the current state of knowledge in this field. The aims of this review are also to foster the interest of the scientific community and to trigger a global effort to further enhance the current analytical capabilities of transmission electron microscopy for chemical bonding and electronic structure analysis.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Agence Nationale de la Recherche
ID : ANR-22-CE29-0019
Organisme : University of Leeds
Organisme : Austrian Science Fund
ID : I4309-N36
Organisme : Engineering and Physical Sciences Research Council
ID : EP/V036432/1
Organisme : Engineering and Physical Sciences Research Council
ID : EP/W021080/1
Informations de copyright
© 2024 The Author(s). Journal of Microscopy published by John Wiley & Sons Ltd on behalf of Royal Microscopical Society.
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