Attosecond Dynamics of sp-Band Photoexcitation

Riemensberger, Johann; Neppl, Stefan; Potamianos, Dionysios; Schaeffer, Martin; Schnitzenbaumer, Maximilian; Ossiander, Marcus; Schröder, Christian; Guggenmos, Alexander; Kleineberg, Ulf; Menzel, Dietrich; Allegretti, Francesco; Barth, Johannes V.; Kienberger, Reinhard; Feulner, Peter; Borisov, Andrei G.; Echenique, Pedro M. und Kazansky, Andrey K. (2019): Attosecond Dynamics of sp-Band Photoexcitation. In: Physical Review Letters, Bd. 123, Nr. 17, 176801

Abstract

We report measurements of the temporal dynamics of the valence band photoemission from the magnesium (0001) surface across the resonance of the (Gamma) over bar surface state at 134 eV and link them to observations of high-resolution synchrotron photoemission and numerical calculations of the time-dependent Schrodinger 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.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0031-9007
• Sprache: Englisch