Phys. Rev. Lett. 75, 4702–4705 (1995)Electron Dynamics in Copper Metallic Nanoparticles Probed with Femtosecond Optical PulsesReceived 9 May 1995; published in the issue dated 18 December 1995 The thermalization of electrons in copper nanoparticles embedded in glass is investigated using femtosecond pump-probe spectroscopy. The time dependent induced transmission is enhanced near the surface plasmon resonance of the nanoparticles, as opposed to the static one obtained with thermomodulation measurements. In addition, a slowing of the process of electron cooling to the lattice temperature is observed at the plasmon resonance. These observations show the importance of quasiparticle collisions in confined metallic structures. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.75.4702
DOI:
10.1103/PhysRevLett.75.4702
PACS:
78.47.+p
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