Time-Resolved Femtosecond Photoelectron Spectroscopy by Field-Induced Surface Hopping

We investigated the excited-state dynamics of para-xylylene using a combination of field-induced surface hopping simulations and time-resolved photoionisation experiments. Ultraviolet excitation is followed by nonadiabatic relaxation to the ground state in a two-step mechanism on the sub-ps time scale.

Download Full-text

Exploring the Excited-State Dynamics of Hydrocarbon Radicals, Biradicals, and Carbenes Using Time-Resolved Photoelectron Spectroscopy and Field-Induced Surface Hopping Simulations

The Journal of Physical Chemistry A ◽

10.1021/acs.jpca.9b06346 ◽

2019 ◽

Vol 123 (50) ◽

pp. 10643-10662

Author(s):

Anja Röder ◽

Jens Petersen ◽

Kevin Issler ◽

Ingo Fischer ◽

Roland Mitrić ◽

...

Keyword(s):

Excited State ◽

Photoelectron Spectroscopy ◽

Time Resolved ◽

Surface Hopping ◽

Excited State Dynamics ◽

Hydrocarbon Radicals

Download Full-text

Combined Surface-Hopping, Dyson Orbital, and B-Spline Approach for the Computation of Time-Resolved Photoelectron Spectroscopy Signals: The Internal Conversion in Pyrazine

Journal of Chemical Theory and Computation ◽

10.1021/acs.jctc.1c00396 ◽

2021 ◽

Author(s):

Tomislav Piteša ◽

Marin Sapunar ◽

Aurora Ponzi ◽

Maxim F. Gelin ◽

Nađa Došlić ◽

...

Keyword(s):

Photoelectron Spectroscopy ◽

Internal Conversion ◽

Time Resolved ◽

Surface Hopping ◽

B Spline

Download Full-text

Electronic relaxation of aqueous aminoazobenzenes studied by time-resolved photoelectron spectroscopy and surface hopping TDDFT dynamics calculations

Faraday Discussions ◽

10.1039/d0fd00111b ◽

2020 ◽

Author(s):

Evgenii Titov ◽

Johan Hummert ◽

Evgenii Ikonnikov ◽

Roland Mitrić ◽

Oleg Kornilov

Keyword(s):

Photoelectron Spectroscopy ◽

Electronic Relaxation ◽

Time Resolved ◽

Surface Hopping ◽

Large Molecules ◽

Ultrafast Relaxation

Studies of ultrafast relaxation of molecular chromophores are complicated by the fact that most chromophores of biological and technological importance are rather large molecules and are strongly affected by their...

Download Full-text

Attosecond intra-valence band dynamics and resonant-photoemission delays in W(110)

Nature Communications ◽

10.1038/s41467-021-23650-7 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

S. Heinrich ◽

T. Saule ◽

M. Högner ◽

Y. Cui ◽

V. S. Yakovlev ◽

...

Keyword(s):

Valence Band ◽

Photoelectron Spectroscopy ◽

Electronic Band Structure ◽

Photoelectric Effect ◽

Final State ◽

Electronic Band ◽

Time Resolved ◽

Resonant Photoemission ◽

Pulse Trains ◽

Electron Correlation Effects

AbstractTime-resolved photoelectron spectroscopy with attosecond precision provides new insights into the photoelectric effect and gives information about the timing of photoemission from different electronic states within the electronic band structure of solids. Electron transport, scattering phenomena and electron-electron correlation effects can be observed on attosecond time scales by timing photoemission from valence band states against that from core states. However, accessing intraband effects was so far particularly challenging due to the simultaneous requirements on energy, momentum and time resolution. Here we report on an experiment utilizing intracavity generated attosecond pulse trains to meet these demands at high flux and high photon energies to measure intraband delays between sp- and d-band states in the valence band photoemission from tungsten and investigate final-state effects in resonant photoemission.

Download Full-text