Close-coupling calculations for ion-surface interactions

Kürpick, P.; Thumm, Uwe; Wille, U.

doi:10.1016/s0168-583x(96)00914-7

Cited by 20 publications

(2 citation statements)

References 12 publications

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“…The various approaches listed below are exact for the given model potential. They differ in the method chosen to locate the quasi-stationary states: the complex scaling method, the scattering approach for the coupled angular mode method (CAM), stabilization, , close coupling, , or wave packet propagation. , The latter approach has been presented in more detail in section 2.2.1. These methods allow parameter-free determinations of the charge-transfer characteristics.…”

Section: 4 Transient States Localized On Adsorbates At Surfacesmentioning

confidence: 99%

Electronic Excitations in Metals and at Metal Surfaces

et al. 2006

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Section: 4 Transient States Localized On Adsorbates At Surfacesmentioning

confidence: 99%

Electronic Excitations in Metals and at Metal Surfaces

et al. 2006

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“…It is a one-electron energy-conserving process, in which the electron tunnels through the potential barrier separating the atom and the metal. 15 Nonperturbative treatments of the resonant charge transfer process (RCT) process are now available [16][17][18][19][20][21] that can accurately account for experimental findings in simple systems. [22][23][24] On a free-electron metal, for an atom sitting at a typical adsorption distance, the RCT process is very fast, occurring on a time scale of a fraction of a femtosecond.…”

Section: Introductionmentioning

confidence: 99%

Excited electron transfer between a core-excitedAr*(2p3∕2−14s)atom and th

Gauyacq

Borisov

2004

Phys. Rev. B

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The transfer of the excited electron from the core-excited Ar* ͑2p 3/2 −1 4s͒ atom to a metal substrate is studied theoretically in the case of Ar atoms physisorbed on Cu(111). The study is based on a wave packet propagation (WPP) approach associated with a model representation of the system. The L band gap of Cu is shown to lead to a drastic decrease of the resonant charge transfer rate in the case of a Cu (111) surface, as compared to the case of a free-electron metal surface. Comparison between the present results and earlier results for the charge transfer rates in alkali/Cu(111) systems allows a discussion of the validity of the so-called Z + 1 approximation for core-excited states. The cases of a single Ar atom and of 1, 2, and 3 monolayers of Ar on the surface are investigated. The dynamics of the excited electron transfer is shown to be strongly influenced by neighboring Ar atoms, through polarization and confinement effects associated with the insulating properties of solid Ar. The present theoretical results are discussed in connection with recent experimental results on the Ar*-metal charge transfer problem.

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