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Title: Spin-dependent studies of the dynamics of He{sup +} ion neutralization at a Au(100) surface

Abstract

Spin labeling techniques, specifically the use of electron-spin-polarized He{sup +} ions coupled with energy-resolved measurements of the ejected electron polarization, are used to study the dynamics of He{sup +} neutralization at a Au(100) surface. A marked correlation in the spins of the electrons involved in the Auger neutralization process is observed that is particularly pronounced at the highest ejected electron energies. A theoretical model is presented that explains the general characteristics of the data by considering the perturbation in the surface electronic structure induced by the presence of the (polarized) He{sup +} ion. This model, which includes the effects of ion velocity parallel to the surface, shows that the induced density of states is spin dependent, the spin dependence being most pronounced in the vicinity of the Fermi energy. {copyright} {ital 1999} {ital The American Physical Society}

Authors:
; ; ; ; ;  [1]
  1. Department of Physics and the Rice Quantum Institute, Rice University, P.O. Box 1892, Houston, Texas 77251-1892 (United States)
Publication Date:
OSTI Identifier:
686556
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 60; Journal Issue: 12; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; HELIUM IONS; GOLD; ION COLLISIONS; POLARIZATION; SURFACES; ELECTRONIC STRUCTURE; ELECTRON DENSITY; SPIN; AUGER EFFECT

Citation Formats

Bixler, D.L., Lancaster, J.C., Kontur, F.J., Nordlander, P., Walters, G.K., and Dunning, F.B. Spin-dependent studies of the dynamics of He{sup +} ion neutralization at a Au(100) surface. United States: N. p., 1999. Web. doi:10.1103/PhysRevB.60.9082.
Bixler, D.L., Lancaster, J.C., Kontur, F.J., Nordlander, P., Walters, G.K., & Dunning, F.B. Spin-dependent studies of the dynamics of He{sup +} ion neutralization at a Au(100) surface. United States. doi:10.1103/PhysRevB.60.9082.
Bixler, D.L., Lancaster, J.C., Kontur, F.J., Nordlander, P., Walters, G.K., and Dunning, F.B. Wed . "Spin-dependent studies of the dynamics of He{sup +} ion neutralization at a Au(100) surface". United States. doi:10.1103/PhysRevB.60.9082.
@article{osti_686556,
title = {Spin-dependent studies of the dynamics of He{sup +} ion neutralization at a Au(100) surface},
author = {Bixler, D.L. and Lancaster, J.C. and Kontur, F.J. and Nordlander, P. and Walters, G.K. and Dunning, F.B.},
abstractNote = {Spin labeling techniques, specifically the use of electron-spin-polarized He{sup +} ions coupled with energy-resolved measurements of the ejected electron polarization, are used to study the dynamics of He{sup +} neutralization at a Au(100) surface. A marked correlation in the spins of the electrons involved in the Auger neutralization process is observed that is particularly pronounced at the highest ejected electron energies. A theoretical model is presented that explains the general characteristics of the data by considering the perturbation in the surface electronic structure induced by the presence of the (polarized) He{sup +} ion. This model, which includes the effects of ion velocity parallel to the surface, shows that the induced density of states is spin dependent, the spin dependence being most pronounced in the vicinity of the Fermi energy. {copyright} {ital 1999} {ital The American Physical Society}},
doi = {10.1103/PhysRevB.60.9082},
journal = {Physical Review, B: Condensed Matter},
number = 12,
volume = 60,
place = {United States},
year = {1999},
month = {9}
}