Induced polarization by charged particles in real solids

Campillo, I.; Pitarke, J. M.; Unibertsitatea, Euskal Herriko; Mixto, Centro

doi:10.1016/s0168-583x(99)01087-3

Cited by 3 publications

(1 citation statement)

References 46 publications

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“…Theoretical estimates were based on the Lindhard scheme [10], and the stopping medium was modeled mostly as a Fermi gas, either by the Lindhard dielectric function or modifications thereof [6,[11][12][13][14]. Extensions beyond these schemes include a first-order theory involving bound electrons in a lattice [15] and a second-order correction to the wake potential of a Fermi gas [16].…”

Section: Introductionmentioning

confidence: 99%

Polarization wake of penetrating ions: oscillator model

Schinner

Sigmund

2012

Eur. Phys. J. D

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The wake potential induced by a swift nonrelativistic ion has been studied theoretically for a random stopping medium consisting of quantal-harmonic-oscillator atoms. The primary purpose has been to study the influence of atomic binding on the frequently-studied wake potential in a Fermi gas. Quantitative comparisons at constant plasma frequency and increasing oscillator frequency show a gradual decrease in wavelength and a slight decrease in amplitude of the oscillatory part of the wake potential, as well as a systematic decrease in screening of the near-field next to the projectile. These findings can be expected on the basis of the Drude-Lorentz formula for the effective resonance frequency. We find a distinct dependence of the induced potential on the ion charge as long as the plasma frequency exceeds the oscillator frequency. In the opposite case of a dominating oscillator frequency we find little difference between the field induced by a point charge and that by a neutral atom. As an application area we briefly discuss the proximity effect in the energy loss of molecular ions. We find that the polarization wake modifies the proximity effect, in contrast to the frequently-expressed view that it causes the proximity effect.

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Section: Introductionmentioning

confidence: 99%

Polarization wake of penetrating ions: oscillator model

Schinner

Sigmund

2012

Eur. Phys. J. D

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Nonlinear, Band-Structure, and Surface Effects in the Interaction of Charged Particles with Solids

Pitarke¹,

Gurtubay²,

Nazarov³

2004

Advances in Quantum Chemistry

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A survey is presented of various aspects of the interaction of charged particles with solids. In the framework of many-body perturbation theory, we study the nonlinear interaction of charged particles with a free gas of interacting electrons; in particular, nonlinear corrections to the stopping power are analyzed, and special emphasis is made on the separate contributions that are originated in the excitation of either electron-hole pairs, single plasmons, or double plasmons. Ab initio calculations of the electronic energy loss of ions moving in real solids are also presented, and the energy loss of charged particles interacting with simple metal surfaces is addressed.

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Theory of surface plasmons and surface-plasmon polaritons

Pitarke¹,

Silkin²,

Chulkov³

et al. 2006

Rep. Prog. Phys.

1,333

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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Induced polarization by charged particles in real solids

Cited by 3 publications

References 46 publications

Polarization wake of penetrating ions: oscillator model

Polarization wake of penetrating ions: oscillator model

Nonlinear, Band-Structure, and Surface Effects in the Interaction of Charged Particles with Solids

Theory of surface plasmons and surface-plasmon polaritons

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