arXiv.svg (5.58 kB)
Download file

Attosecond dispersive soft X-ray absorption fine structure spectroscopy in graphite

Download (5.58 kB)
posted on 2023-03-18, 16:00 authored by Bárbara Buades, Dooshaye Moonshiram, Themistoklis P. H. Sidiropoulos, Iker León, Peter Schmidt, Irina Pi, Nicola Di Palo, Seth L. Cousin, Antonio Picón, Frank Koppens
Phase transitions of solids and structural transformations of molecules are canonical examples of important photo-induced processes, whose underlying mechanisms largely elude our comprehension due to our inability to correlate electronic excitation with atomic position in real time. Here, we present a decisive step towards such new methodology based on water-window-covering (284 eV to 543 eV) attosecond soft X-ray pulses that can simultaneously access electronic and lattice parameters via dispersive X-ray absorption fine-structure (XAFS) spectroscopy. We validate attoXAFS with an identification of the {\sigma}* and {\pi}* orbital contributions to the density of states in graphite simultaneously with its lattice's four characteristic bonding distances. This work demonstrates the concept of attoXAFS as a powerful real-time investigative tool which is equally applicable to gas-, liquid- and condensed phase.



This arXiv metadata record was not reviewed or approved by, nor does it necessarily express or reflect the policies or opinions of, arXiv.

Usage metrics