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Ultrafast electron dynamics at metal surfaces: Competition between electron-phonon coupling and hot-electron transport

MPS-Authors
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Bonn,  Mischa
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Denzler,  Daniel N.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Funk,  Stephan
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Wolf,  Martin
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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PhysRevB.61.1101.pdf
(Publisher version), 149KB

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Citation

Bonn, M., Denzler, D. N., Funk, S., Wolf, M., Wellershoff, S.-S., & Hohlfeld, J. (2000). Ultrafast electron dynamics at metal surfaces: Competition between electron-phonon coupling and hot-electron transport. Physical Review B, 61(2), 1101-1105. doi:10.1103/PhysRevB.61.1101.


Cite as: https://hdl.handle.net/21.11116/0000-0009-3EB9-2
Abstract
An experimental scheme (double pump/reflectivity probe using femtosecond laser pulses) enables the investigation of nonequilibrium electron dynamics at metal surfaces by measuring the equilibrated surface temperature. The competition between electron-phonon coupling and hot-electron transport gives rise to a reduced equilibrated temperature when the two pump pulses overlap in time, and provides a way of accurately determining the electron-phonon coupling constant. These observations have important consequences for femtosecond photochemical investigations.