Honey, I Shrunk the Synchrotron: Electron Microscopy in Condensed Matter Physics
· Invited
Abstract
In this talk, I will present our recent experimental results using the latest generation of monochromated aberration-corrected scanning and transmission electron microscopes (STEM). Four examples of how one can reveal the magnetic ordering and orbital ordering of materials with atomic size electron probes will be shown. We have also used the principle of detailed balance to morph the electron microscope in a primary thermometer and revealed the anharmonic behavior of materials at the nanoscale. Our efforts in studying the phonon dispersion of materials under the presence of different isotopic species will be also mentioned. Finally, current and future limitations in the experiments and requirements to reveal the magnetic moment (orbital and spin), charge ordering, crystal field splitting, spin-orbit-coupling, optical dichroism, and other physical phenomena associated with broken symmetries will be discussed.
*This research was supported by the Center for Nanophase Materials Sciences, which is a Department of Energy Office of Science User Facility, using instrumentation within ORNL’s Materials Characterization Core provided by UT-Batelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy, and sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy.
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Presenters
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Juan Idrobo
- Oak Ridge National Lab
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory