Attosecond Dynamics of sp-Band Photoexcitation.
Phys Rev Lett
; 123(17): 176801, 2019 Oct 25.
Article
em En
| MEDLINE
| ID: mdl-31702261
ABSTRACT
We report measurements of the temporal dynamics of the valence band photoemission from the magnesium (0001) surface across the resonance of the Γ[over ¯] surface state at 134 eV and link them to observations of high-resolution synchrotron photoemission and numerical calculations of the time-dependent Schrödinger equation using an effective single-electron model potential. We observe a decrease in the time delay between photoemission from delocalized valence states and the localized core orbitals on resonance. Our approach to rigorously link excitation energy-resolved conventional steady-state photoemission with attosecond streaking spectroscopy reveals the connection between energy-space properties of bound electronic states and the temporal dynamics of the fundamental electronic excitations underlying the photoelectric effect.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2019
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Article