Abstract
Employing time-resolved photoelectron spectroscopy we analyze the relaxation dynamics of hot electrons in the charge density wave/Mott material . At 1.2 eV above the Fermi level we observe a hot electron lifetime of fs in the metallic state and of fs in the broken symmetry ground state—a direct consequence of the reduced phase space for electron-electron scattering determined by the Mott gap. Boltzmann equation calculations which account for the interaction of hot electrons in a Bloch band with a doublon-holon excitation in the Mott state provide insight into the unoccupied electronic structure in the correlated state.
- Received 26 July 2019
- Revised 7 May 2020
- Accepted 11 May 2020
DOI:https://doi.org/10.1103/PhysRevResearch.2.022046
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Published by the American Physical Society