Attosecond Electron Dynamics in Solids

DIPC Seminars

Ralph Ernstorfer, Fritz Haber Institute, Berlin, Technical Univ. Munich, Garching.
Donostia International Physics Center (DIPC). Paseo Manuel de Lardizabal, 4 (nearby the Facultad de Quimica), Donostia
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Attosecond Electron Dynamics in Solids Attosecond Electron Dynamics in Solids Ralph Ernstorfer Max Planck Research Group for Structural & Electronic Surface Dynamics, Fritz Haber Institute, Faradayweg 4-6, 14195 Berlin, Physics Department E11, Technical University Munich, 85748 Garching, Max Planck Institute for Quantum Optics, 85748 Garching. Fundamental electronic processes in condensed matter like electron transport on atomic length scales and the many-body response to a sudden perturbation occur on the attosecond time scale. In order to access this sub-femtosecond time scale, we apply a streak camera operating at optical frequencies in order to time-stamp photoelectrons generated by an isolated extreme ultraviolet laser pulse with attosecond duration. This technique allows us to measure the relative emission time of valence and core electrons with a precision of tens of attoseconds. I will report of recent studies of clean metals and magnesium covered surfaces and will discuss the origin of the observed relative delays in the emission of photoelectrons from different initial states. I will conclude with recent results on our attempts to initiate and control macroscopic currents inside dielectrics with few-cycle laser pulses.