Real-space mapping of electronic orbitals.

Ultramicroscopy

University Service Centre for Transmission Electron Microscopy, TU Vienna, Wiedner Hauptstraße 8-10/E057B, 1040 Wien, Austria; Institute for Solid State Physics, TU Vienna, Wiedner Hauptstraße 8-10/E138, 1040 Wien, Austria.

Published: June 2017

AI Article Synopsis

  • Electronic states influence crucial material properties like chemical bonding, conductivity, and magnetism, but studying them experimentally is challenging.
  • The research utilizes electron energy-loss spectrometry (EELS) to map p and d state transitions in bulk rutile (TiO) at an atomic scale, providing insights into specific atomic bonds.
  • This approach not only validates theoretical predictions about electronic states but also opens avenues for examining these states in complex scenarios like defects and quantum dots, which current simulations struggle to address.

Article Abstract

Electronic states are responsible for most material properties, including chemical bonds, electrical and thermal conductivity, as well as optical and magnetic properties. Experimentally, however, they remain mostly elusive. Here, we report the real-space mapping of selected transitions between p and d states on the Ångström scale in bulk rutile (TiO) using electron energy-loss spectrometry (EELS), revealing information on individual bonds between atoms. On the one hand, this enables the experimental verification of theoretical predictions about electronic states. On the other hand, it paves the way for directly investigating electronic states under conditions that are at the limit of the current capabilities of numerical simulations such as, e.g., the electronic states at defects, interfaces, and quantum dots.

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http://dx.doi.org/10.1016/j.ultramic.2017.01.018DOI Listing

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