Search

Your search keyword '"Echenique, Pedro M."' showing total 2 results
Start Over Author "Echenique, Pedro M." Topic photoelectron spectroscopy
2 results on '"Echenique, Pedro M."'

1. Atomic scale electronic structure and response in attosecond photoemission delays: A case study using non-centrosymmetric BiTeCl.

Author

Neb, Sergej, Oberer, Christian, Enns, Walter, Gebauer, Andreas, Müller, Norbert, Dil, J. Hugo, Chulkov, Evgueni V., Kabachnik, Nikolay M., Echenique, Pedro M., Kazansky, Andrey K., Heinzmann, Ulrich, Pfeiffer, Walter, Cerullo, G., Ogilvie, J., Kärtner, F., Khalil, M., and Li, R.

Subjects
BISMUTH compounds spectra, ATOMIC structure, ATTOSECOND pulses, PHOTOELECTRON spectroscopy, PROPERTIES of matter
Abstract

Attosecond time-resolved photoemission from the differently terminated BiTeCl surfaces yield a photoelectron streaking that cannot be explained by bulk propagation effects alone. Instead, the atomic scale electronic structure and dynamical screening for both surface terminations have to be taken into account. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

2. Angular momentum–induced delays in solid-state photoemission enhanced by intra-atomic interactions.

Author

Siek, Fabian, Neb, Sergej, Bartz, Peter, Hensen, Matthias, Strüber, Christian, Fiechter, Sebastian, Torrent-Sucarrat, Miquel, Silkin, Vyacheslav M., Krasovskii, Eugene E., Kabachnik, Nikolay M., Fritzsche, Stephan, Díez Muiño, Ricardo, Echenique, Pedro M., Kazansky, Andrey K., Müller, Norbert, Pfeiffer, Walter, and Heinzmann, Ulrich

Subjects
*MOMENTUM (Mechanics), *INERTIA (Mechanics), *CONSERVATION of momentum, *PHOTOEMISSION, *PHOTOELECTRON spectroscopy
Abstract

Attosecond time-resolved photoemission spectroscopy reveals that photoemission from solids is not yet fully understood. The relative emission delays between four photoemission channels measured for the van der Waals crystal tungsten diselenide (WSe2) can only be explained by accounting for both propagation and intra-atomic delays. The intra-atomic delay depends on the angular momentum of the initial localized state and is determined by intra-atomic interactions. For the studied case of WSe2, the photoemission events are time ordered with rising initial-state angular momentum. Including intra-atomic electron-electron interaction and angular momentum of the initial localized state yields excellent agreement between theory and experiment. This has required a revision of existing models for solid-state photoemission, and thus, attosecond time-resolved photoemission from solids provides important benchmarks for improved future photoemission models. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results