George Sawatzky

Professor Emeritus

Department of Physics and Astronomy; Department of Chemistry

Current Projects

  • Q-resolved electron energy-loss spectroscopy of charge excitations in strongly-correlated systems
  • Screening of short-range Coulomb interactions in materials with strongly non-uniform polarizability
  • Dynamical charge fluctuations, bond disproportionation, and negative charge transfer gap in systems such as BaBiO3 and the perovskite rare-earth nickelates
  • Electron-magnon-phonon coupling and their role in high Tc superconductors and topology
  • Resonant soft x-ray reflectometry and the study of buried interfaces in heterostructures

Selected Publications

  1. S. Johnston, A. Mukherjee, I. Elfimov, M. Berciu, and George A. Sawatzky. Charge Disproportionation without Charge Transfer in the Rare-Earth-Element Nickelates as a Possible Mechanism for the Metal-Insulator Transition. Phys. Rev. Lett. 112, 106404 (2014)
  2. M. T. Czyżyk and G. A. Sawatzky. Local-density functional and on-site correlations: The electronic structure of La2CuO4 and LaCuO3. Phys. Rev. B 49, 14211 (1994)
  3. J. Zaanen, G.A. Sawatzky, J.W. Allen. Band gaps and electronic structure of transition-metal compounds. Phys. Rev. Lett. 55, 418 (1985).