Phonon-mode-specific modulation of electronic states in molybdenum dioxide
Year: 2025
Type: article
Abstract: Near-infrared pump and extreme ultraviolet probe transient absorption spectroscopy is employed to unravel the phonon-mode-specific modifications of electronic states near the Fermi energy in molybdenum dioxide. We observe distinct fingerprints of two coherent phonon modes at a frequency of 6 and 11 THz which differ vastly in their energy-dependent modulations of the electronic response. By combining our measurements with density functional theory calculations, we show that the measured energy-dependent contrast between the phonon modes is primarily governed by the modification of the projected density of states. These findings highlight the pivotal role of lattice dynamics in the ultrafast electronic response.
DOI: 10.1103/9zlm-bqbn
Institution: ETH Zurich
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4414426739