Innovations in Electron Microscopy for Quantum Materials Discovery

D.C. Bell, C.O. Keskinbora
Harvard University,
United States

Keywords: quantum materials, electron microscopy, low voltage electron microscopy, materials discovery

Summary:

Depending on the composition, Quantum Materials may act as conductors, insulators, semiconductors or even as superconductors. Combinations of different quantum materials are of high interest to explore new phenomena and act as the foundation for future electronic devices at the nanometer scale. The foundation of quantum materials follows from materials that are ideally suited to layered atomic-scale structures that control the flow of charge and spin such as shown in graphene and the class of materials known as Topological Insulators. The exploration and synthesis constitute only one aspect of the challenges in the development of new topological materials, another challenge is their characterization. Since the phenomena appear at very restricted and dedicated conditions, the characterization method must have very high sensitivity, resolution, localization and precision. The analysis of quantum materials presents new challenges on how to minimize surface and sample damage while imaging and analyzing structures at or beyond the direct atomic level, new approaches are considered in order to correlate materials properties with structure. Some of our multi modal approaches will be discussed in this presentation.