Collective surface modes of Ag single crystals

Telich-Tarriba, José E; Mochán, W. Luis

doi:10.1103/physrevb.46.12902

Cited by 49 publications

(46 citation statements)

References 55 publications

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“…In order to describe the observed features of Ag surface plasmons, various simplified models for the screening of d electrons have been developed [112,113,114,115,116]. Most recently, calculations have been found to yield a qualitative understanding of the existing electron energy-loss measurements by combining a self-consistent jellium model for valence 5s electrons with a so-called dipolium model in which the occupied 4d bands are represented in terms of polarizable spheres located at the sites of a semi-infinite face-cubic-centered (fcc) lattice [117].…”

mentioning

confidence: 99%

Theory of surface plasmons and surface-plasmon polaritons

Pitarke¹,

Silkin²,

Chulkov³

et al. 2006

Rep. Prog. Phys.

1,337

998

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Collective electronic excitations at metal surfaces are well known to play a key role in a wide spectrum of science, ranging from physics and materials science to biology. Here we focus on a theoretical description of the many-body dynamical electronic response of solids, which underlines the existence of various collective electronic excitations at metal surfaces, such as the conventional surface plasmon, multipole plasmons, and the recently predicted acoustic surface plasmon. We also review existing calculations, experimental measurements, and applications.

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mentioning

confidence: 99%

Theory of surface plasmons and surface-plasmon polaritons

Pitarke¹,

Silkin²,

Chulkov³

et al. 2006

Rep. Prog. Phys.

1,337

998

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“…Following Tarriba and Mochán 12 we assume that all the atomic sites are characterized by the same polarizability ␣, which can be found from the measured bulk ⑀…”

Section: Model Of the Surface Responsementioning

confidence: 99%

“…12 The metal with a surface is described by a semi-infinite lattice of N polarizable atomic spheres per unit volume immersed in semi-infinite free-electron jellium. As the electromagnetic wavelength and penetration depth in the metal are large compared to the distance over which surface effects take place, we can work in the long-wavelength limit and consider the charge response of the system to the applied electric field.…”

Section: Model Of the Surface Responsementioning

confidence: 99%

“…6 The d-parameter theory simply describes the reflected and transmitted electromagnetic waves with two simple parameters which are directly related to the parallel and perpendicular surface-induced current densities and to the surface collective excitations ͑surface plasmons͒. The d-parameter and equivalent formalisms have been intensively used to study different simple models of insulating 7,8 and metallic [9][10][11][12][13][14] surfaces. It has also been extended in order to study optical properties at a general interface.…”

Section: Introductionmentioning

confidence: 99%

“…We use the model of Tarriba and Mochán 12 which they used to calculate the field far from an Ag surface. It has given results for the optical reflectance anisotropy spectra of an Ag͑110͒ surface in very good agreement with experimental data.…”

Section: Introductionmentioning

confidence: 99%

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Local-field effects on the near-surface and near-interface screened electric field in noble metals

et al. 2001

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The screening of an optical electric field at a noble metal surface is evaluated within a semiclassical model where the nonlocality of the d-electron response is taken into account via a set of interacting atomic dipoles. The dipole moments in the first few atomic layers differ from the expected bulk value due to the symmetry breakdown at the surface. These effects give rise to surface-induced electric charges and currents and to a surface-induced electric field which vanishes in the bulk but can be important in the top atomic layers. This field takes into account local-field effects, is frequency dependent and is strongly enhanced in a frequency range characteristic of the metal surface. Results are first given for an electric field perpendicular to the metal surface, and the enhancement of the surface response is mainly due to interband electronic transitions for the Cu and Au surfaces, while it originates from a coupling with the bulk plasmon excitations for an Ag surface. The anisotropy in the surface response is studied for an electric field parallel to the anisotropic Ag͑110͒ surface. Finally, the calculation is generalized to describe screening effects at an interface between two different noble metals. The simple surface model used in this paper shows that the surface-induced electric field should be taken into account in the simulations of surface spectroscopy, where the calculated signal directly depends on the linearly screened field at the surface.

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Local Field Effects in the Dynamical Response of Ag

López-Bastidas

Mochán

1998

phys. stat. sol. (a)

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Collective surface modes of Ag single crystals

Cited by 49 publications

References 55 publications

Theory of surface plasmons and surface-plasmon polaritons

Theory of surface plasmons and surface-plasmon polaritons

Local-field effects on the near-surface and near-interface screened electric field in noble metals

Local Field Effects in the Dynamical Response of Ag

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