Real-time observation of collective excitations in photoemission

C. Lemell, S. Neppl, G. Wachter, K. Tőkési, R. Ernstorfer, P. Feulner, R. Kienberger, J. Burgdörfer

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Ejection of an electron by absorption of an extreme ultraviolet (xuv) photon probes the many-electron response of a solid well beyond the single-particle picture. Photoemission spectra feature complex correlation satellite structures signifying the simultaneous excitation of single or multiple plasmons. The time delay of the plasmon satellites relative to the main line can be resolved in attosecond streaking experiments. Time-resolved photoemission thus provides the key to discriminate between intrinsic and extrinsic plasmon excitation. We demonstrate the determination of the branching ratio between intrinsic and extrinsic plasmon generation for simple metals.

Original languageEnglish
Article number241101
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number24
DOIs
Publication statusPublished - Jun 3 2015

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Photoemission
photoelectric emission
Plasmons
Electrons
plasmons
ejection
excitation
Time delay
electrons
time lag
Photons
Metals
Satellites
probes
photons
metals
Experiments

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Real-time observation of collective excitations in photoemission. / Lemell, C.; Neppl, S.; Wachter, G.; Tőkési, K.; Ernstorfer, R.; Feulner, P.; Kienberger, R.; Burgdörfer, J.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 91, No. 24, 241101, 03.06.2015.

Research output: Contribution to journalArticle

Lemell, C, Neppl, S, Wachter, G, Tőkési, K, Ernstorfer, R, Feulner, P, Kienberger, R & Burgdörfer, J 2015, 'Real-time observation of collective excitations in photoemission', Physical Review B - Condensed Matter and Materials Physics, vol. 91, no. 24, 241101. https://doi.org/10.1103/PhysRevB.91.241101
Lemell, C. ; Neppl, S. ; Wachter, G. ; Tőkési, K. ; Ernstorfer, R. ; Feulner, P. ; Kienberger, R. ; Burgdörfer, J. / Real-time observation of collective excitations in photoemission. In: Physical Review B - Condensed Matter and Materials Physics. 2015 ; Vol. 91, No. 24.
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