Investigation of Electronic Excitations in Monoclinic HfO2 Studied by Energy-Filtered Transmission Electron Microscopy-Spectrum-Imaging and Momentum-Resolved Electron Energy Loss ω-q Mapping Techniques
1 Electron Microscopy Facility, Institute for Functional Materials and Devices, Lehigh University, Bethlehem, PA, United States.
2 Advanced Imaging and Microscope Laboratory, Maryland Nano Center, Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD, United States.
3 Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, United States.
4 Electron Microscopy Center, Indiana University Bloomington, Bloomington, IN, United States.
5 Texas Materials Institute, University of Texas at Austin, Austin, Texas, United States.
6 Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan.