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Regensburg 2010 – scientific programme

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O: Fachverband Oberflächenphysik

O 5: Electron and spin dynamics I

O 5.6: Talk

Monday, March 22, 2010, 12:30–12:45, H34

Attosecond photoelectron spectroscopy of solids — •Elisabeth Magerl1, Adrian L. Cavalieri1, Ralph Ernstorfer2, Stefan Neppl2, Nicholas Karpowicz1, Michael Stanislawski1, Elisabeth Bothschafter1, Dietrich Menzel2, Johannes V. Barth2, Peter Feulner2, Ferenc Krausz1,3, and Reinhard Kienberger1,21Max Planck Institute of Quantum Optics, Garching, Germany — 2Technical University of Munich - E20, E11, Garching, Germany — 3Ludwig Maximilians University, Munich, Germany

The dynamics of the photoelectric effect in single-crystals are investigated on the attosecond time scale. An isolated attosecond XUV-pulse is used to excite photoelectrons, while a few-cycle waveform-controlled NIR-pulse modulates the kinetic energy of the emitted photoelectrons. Recently, applying this streaking technique a relative time delay in emission on the order of 100 attoseconds between electrons originating from different electronic levels in tungsten was already revealed [1].

In order to further study the delay and its possible dependence on material properties and on laser parameters, several streaking measurements on different systems were carried out: We present results obtained on single-crystalline tungsten and rhenium, measured with XUV photon energies of 90 and 130 eV. We also show measurements on a combined system of a single crystal substrate with an adsorbed monolayer of a rare gas.

[1] A. L. Cavalieri et al., Nature 449, 1029 (2007)

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