| AVS 63rd International Symposium & Exhibition | |
| 2D Materials Focus Topic | Tuesday Sessions |
| Session 2D-TuA |
| Session: | Novel Quantum Phenomena in 2D Materials |
| Presenter: | Oliver Monti, University of Arizona |
| Authors: | O.L.A. Monti, University of Arizona C. Eads, University of Arizona D. Bandak, University of Arizona D. Nordlund, SLAC National Accelerator Laboratory M. Neupane, US Army Research Laboratory |
| Correspondent: | Click to Email |
We use soft x-ray resonant photoemission and core-hole-clock spectroscopy to investigate the ultrafast carrier dynamics in SnS2. We show that carriers delocalize on a time-scale of a few hundred attoseconds near the conduction band minimum, but remain localized over an order of magnitude longer in higher lying bands. On the basis of density functional theory calculations we are able to show that this is consistent with the 2D nature of SnS2. Moreover, we show that these experiments map the wavefunction in the unoccupied bands. Our measurements represent the first of their kind on the carrier dynamics in such materials.