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Your search keyword '"Kazansky Andrey K."' showing total 2 results
Start Over Author "Kazansky Andrey K." Topic photoemission
2 results on '"Kazansky Andrey K."'

1. Photoemission time versus streaking delay in attosecond time-resolved solid state photo-emission.

Author

Gebauer, Andreas, Neb, Sergej, Enns, Walter, Heinzmann, Ulrich, Kazansky, Andrey K., Pfeiffer, Walter, Cerullo, G., Ogilvie, J., Kärtner, F., Khalil, M., and Li, R.

Subjects
PHOTOEMISSION, ATTOSECOND pulses, TIME-resolved spectroscopy, SOLID state physics, POTENTIAL theory (Physics)
Abstract

Time-dependent Schrodinger equation simulations for a one-dimensional model potential reveal that the delay extracted from a streaking spectrogram does not reflect the photoemission time if the streaking field inside the solid cannot be neglected. [ABSTRACT FROM AUTHOR]

Published
2019
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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
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