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Ultrafast X-ray Absorption and Time-Resolved Resonant X-ray Scattering in a Mott Insulator

ORAL

Abstract

The time-evolution of collective excitations encodes information on photoinduced transient states in correlated systems. The frozen charge degrees of freedom in a Mott insulator can be activated by photodoping, which provides information about the interplay between various intertwined instabilities. Here, we simulate both ultrafast x-ray absorption and time-resolved resonant inelastic x-ray scattering (tr-RIXS) for a Hubbard model under the influence of a strong, transient drive. While absorption primarily provides information on transient photodoping, tr-RIXS allows us to study the evolution of bimagnon, Mott-gap, doublon, and single-particle in-gap excitations, as well as anti-Stokes relaxation following an ultrafast excitation of the system. This work provides a theoretical foundation for existing and future tr-RIXS experiments.

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Presenters

  • Brian Moritz

    SLAC National Accelerator Laboratory and Stanford University, SSRL Materials Science Division, SLAC National Accelerator Laboratory, SLAC, Stanford University, SIMES, SLAC, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA

Authors

  • Brian Moritz

    SLAC National Accelerator Laboratory and Stanford University, SSRL Materials Science Division, SLAC National Accelerator Laboratory, SLAC, Stanford University, SIMES, SLAC, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA

  • Yao Wang

    Harvard University, Department of Physics, Harvard University

  • Yuan Chen

    Stanford University

  • Chunjing Jia

    SLAC National Accelerator Laboratory, SIMES, SLAC, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA, SLAC National Accelerator Lab., SLAC - Natl Accelerator Lab, Stanford University

  • Thomas Devereaux

    Stanford Univ, Materials Science and Engineering, Stanford University, Stanford University, SLAC National Accelerator Laboratory, Photon Sciences, Stanford Linear Accelerator (SLAC), SIMES, SLAC, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA, SLAC National Accelerator Lab.