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Proceedings Paper

Electron relaxation in metals and high-Tc superconductors on the 10-fs timescale
Author(s): D. Brida; C. Gadermaier; D. Polli; V. V. Kabanov; D. Mihailovic; G. Cerullo
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Paper Abstract

We perform two-colour pump probe experiments on metals and superconductors using synchronized 10-fs pulses generated by optical parametric amplifiers, tunable from the visible to the near-infrared, mapping with unprecedented detail the energy equilibration dynamics of the free electron gas. In gold films we observe dramatic changes of the differential reflectivity spectrum on the 100-fs timescale, corresponding to the establishment of the thermal electron distribution, with dynamics dictated by excess energy. In high-Tc cuprate superconductors we observe fast electron relaxation, attributed to a strong electron-phonon coupling which may play a role in the superconductivity mechanism.

Paper Details

Date Published: 21 February 2011
PDF: 7 pages
Proc. SPIE 7937, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XV, 79371P (21 February 2011); doi: 10.1117/12.876856
Show Author Affiliations
D. Brida, Politecnico di Milano (Italy)
C. Gadermaier, Josef Stefan Institute (Slovenia)
D. Polli, Politecnico di Milano (Italy)
V. V. Kabanov, Josef Stefan Institute (Slovenia)
D. Mihailovic, Josef Stefan Institute (Slovenia)
G. Cerullo, Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 7937:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XV
Kong-Thon Tsen; Jin-Joo Song; Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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