Zeptosecond birth time delay in molecular photoionization

@article{Grundmann2020ZeptosecondBT,
  title={Zeptosecond birth time delay in molecular photoionization},
  author={Sven Grundmann and Daniel Trabert and Kilian Fehre and Nico Strenger and Andreas Pier and Leon Kaiser and Max Kircher and Miriam Weller and Sebastian Eckart and Lothar Ph. H. Schmidt and Florian Trinter and Till Jahnke and Markus S. Sch{\"o}ffler and Reinhard D{\"o}rner},
  journal={Science},
  year={2020},
  volume={370},
  pages={339 - 341}
}
The travel time of light in a molecule There is currently considerable interest in experimental studies of various ultrafast processes. Of particular interest are the real-time dynamics of photoionization, one of the most fundamental processes caused by the light-matter interaction, in which the absorption of a photon leads to the ejection of an electron and the formation of anion. Using an electron interferometric technique, Grundmann et al. report a birth time delay on the order of a few… Expand
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References

SHOWING 1-10 OF 30 REFERENCES
Photoionization in the time and frequency domain
TLDR
An ultrafast process is presented that can account for and distinguish the different contributions to the photoemission processes in neon atoms, and spectrally disentangle direct ionization from ionization with shake-up, obtaining excellent agreement with theoretical calculations, thereby solving a puzzle raised by 7-year-old measurements. Expand
Delay in Photoemission
TLDR
Ultrafast metrology reveals a 20-attosecond delay between photoemission from different electronic orbitals in neon atoms and theoretical models refined with the help of attosecond timing metrology may provide insight into electron correlations and allow the setting of the zero of time in atomic-scale chronoscopy with a precision of a few attose Cond. Expand
Introduction to attosecond delays in photoionization
This tutorial presents an introduction to the interaction of light and matter on the attosecond timescale. Our aim is to detail the theoretical description of ultra-short time delays and to relateExpand
Orientation-dependent stereo Wigner time delay and electron localization in a small molecule
TLDR
It is shown that orientation- and energy-resolved measurements characterize the molecular stereo Wigner time delay, which provides direct information on the localization of the excited electron wave packet within the molecular potential. Expand
Attosecond spectroscopy in condensed matter
TLDR
The ability to obtain direct time-domain access to charge dynamics with attosecond resolution by probing photoelectron emission from single-crystal tungsten is demonstrated and illustrates thatAttosecond metrology constitutes a powerful tool for exploring not only gas-phase systems, but also fundamental electronic processes occurring on the attose Cond timescale in condensed-matter systems and on surfaces. Expand
Direct time-domain observation of attosecond final-state lifetimes in photoemission from solids
TLDR
The application of attosecond pulse trains is reported to directly and unambiguously measure the difference in lifetimes between photoelectrons born into free electron–like states and those excited into unoccupied excited states in the band structure of nickel. Expand
Complete photo-fragmentation of the deuterium molecule
TLDR
The coincident measurement of the momenta of both nuclei and both electrons from the single-photon-induced fragmentation of the deuterium molecule reveals that the correlated motion of the electrons is strongly dependent on the inter-nuclear separation in the molecular ground state at the instant of photon absorption. Expand
Interferences from fast electron emission in molecular photoionization.
TLDR
It is shown that, when the electron wave length is comparable to the molecular size, the electron angular distributions arising from fixed-in-space molecules exhibit pronounced interference effects that critically depend on orientation and energy sharing between electrons and nuclei. Expand
Attosecond-resolved photoionization of chiral molecules
TLDR
Self-referenced attosecond photoelectron interferometry is implemented to measure the temporal profile of the forward and backward electron wave packets emitted upon photoionization of camphor by circularly polarized laser pulses, and reveals the chiral character of strongly correlated electronic dynamics. Expand
Direct observation of Young’s double-slit interferences in vibrationally resolved photoionization of diatomic molecules
Vibrationally resolved valence-shell photoionization spectra of H2, N2 and CO have been measured in the photon energy range 20–300 eV using third-generation synchrotron radiation. Young’s double-slitExpand
...
1
2
3
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