Quantum hydrodynamic model for the nonlinear electron dynamics in thin metal films

Article

关键词: GOLD-FILMS;    CLUSTERS;    NANOPARTICLES;    EQUILIBRIUM;    RELAXATION;    ABSORPTION;    TRANSPORT;    PLASMONS;   

DOI  :  10.1103/PhysRevB.78.155412

来源: SCIE

【 摘 要 】

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 Schrodinger-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.

【 授权许可】

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