Single-photon laser-enabled auger spectroscopy for measuring attosecond electron-hole dynamics

Phys Rev Lett. 2013 Aug 23;111(8):083004. doi: 10.1103/PhysRevLett.111.083004. Epub 2013 Aug 20.

Abstract

We propose and simulate a new type of attosecond time-resolved spectroscopy of electron-hole dynamics, applicable particularly to ultrafast hole migration. Attosecond ionization in the inner-valence region is followed by a vacuum ultraviolet probe inducing single-photon laser-enabled Auger decay, a one-photon-two-electron transition filling the inner-valence vacancy. The double ionization probability as a function of the attosecond pump-vacuum ultraviolet probe delay captures efficiently the ultrafast inner-valence hole dynamics. Detailed ab initio calculations are presented for inner-valence hole migration in glycine.