Time Resolved Photoelectron Spectroscopy as a Test of Electronic Structure and Nonadiabatic Dynamics

2021 ◽  
pp. 5099-5104
Author(s):  
Pratip Chakraborty ◽  
Yusong Liu ◽  
Samuel McClung ◽  
Thomas Weinacht ◽  
Spiridoula Matsika
Keyword(s):  
Electronic Structure ◽  
Photoelectron Spectroscopy ◽  
Nonadiabatic Dynamics ◽  
Time Resolved

The influence of aqueous solvent on the electronic structure and non-adiabatic dynamics of indole explored by liquid-jet photoelectron spectroscopy

2018 ◽  
Vol 212 ◽  
pp. 359-381 ◽  
Author(s):  
Gaurav Kumar ◽  
Anirban Roy ◽  
Ryan S. McMullen ◽  
Shanmukh Kutagulla ◽  
Stephen E. Bradforth
Keyword(s):  
Electronic Structure ◽  
Amino Acid ◽  
Photoelectron Spectroscopy ◽  
Liquid Jet ◽  
Time Resolved ◽  
Structure And Dynamics ◽  
Aqueous Solvent ◽  
Influence Of Water ◽  
Amino Acid Tryptophan ◽  
Adiabatic Dynamics

Time-resolved photoelectron spectroscopy (TRPES) in a liquid micro-jet is implemented here to investigate the influence of water on the electronic structure and dynamics of indole, the chromophore of the amino acid tryptophan.

Electronic structure dynamics in a low bandgap polymer studied by time-resolved photoelectron spectroscopy

2016 ◽  
Vol 18 (31) ◽  
pp. 21921-21929 ◽  
Author(s):  
Ute B. Cappel ◽  
Stefan Plogmaker ◽  
Joachim A. Terschlüsen ◽  
Torsten Leitner ◽  
Erik M. J. Johansson ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Harmonic Generation ◽  
Photoelectron Spectroscopy ◽  
High Harmonic ◽  
Time Of Flight ◽  
High Harmonic Generation ◽  
Time Resolved ◽  
Low Bandgap ◽  
Structure Dynamics

The excited electronic structure of PCPDTBT was measured by combining a high harmonic generation source and a time-of-flight spectrometer.

scholarly journals Single-state electronic structure measurements using time-resolved x-ray laser induced photoelectron spectroscopy

2004 ◽  
Vol 840 ◽  
Author(s):  
A. J. Nelson ◽  
J. Dunn ◽  
T. van Buuren ◽  
J. Hunter
Keyword(s):  
Electronic Structure ◽  
Photoelectron Spectroscopy ◽  
Time Of Flight ◽  
Laser Source ◽  
Photon Flux ◽  
Single Shot ◽  
Time Resolved ◽  
X Ray ◽  
Single State ◽  
Uv Ozone

ABSTRACTWe demonstrate single-shot x-ray laser induced time-of-flight photoelectron spectroscopy on semiconductor and metal surfaces with picosecond time resolution. The LLNL COMET compact tabletop x-ray laser source provides the necessary high photon flux (>1012/pulse), monochromaticity, picosecond pulse duration, and coherence for probing ultrafast changes in the chemical and electronic structure of these materials. Static valence band and shallow core-level photoemission spectra are presented for ambient temperature Ge(100) and polycrystalline Cu foils. Surface contamination was removed by UV ozone cleaning prior to analysis. In addition, the ultrafast nature of this technique lends itself to true single-state measurements of shocked and heated materials. Time-resolved electron time-of-flight photoemission results for ultra-thin Cu will be presented.

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

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.

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