Phys. Rev. B 78, 155412 (2008) [11 pages]Quantum hydrodynamic model for the nonlinear electron dynamics in thin metal filmsReceived 25 June 2008; published 9 October 2008 A quantum hydrodynamic (fluid) model, derived from the Wigner-Poisson equations, is used to investigate the ultrafast electron dynamics in thin metal films. The hydrodynamic equations, which include exchange and correlation effects, can be combined into a single nonlinear Schrödinger-type equation. The fluid model is first benchmarked against a density-functional calculation for the ground state, with good agreement between the two approaches. The ultrafast nonlinear electron dynamics is then investigated and compared to recent semiclassical results obtained with a Vlasov-Poisson approach. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.78.155412
DOI:
10.1103/PhysRevB.78.155412
PACS:
73.50.−h, 73.22.Lp, 05.30.Fk
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