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Title: Time evolution of a two-hole state in Auger-induced desorption

Abstract

The dynamics of an Auger-induced desorption of an adatom from the crystal surface is investigated theoretically. A model is proposed which describes the competition between the fundamental interactions in the desorption processes, such as the destabilization of the adatom in the two-hole state, the hopping of the holes to the surface, and the Coulomb repulsion between the localized two holes. A full quantum mechanical formalism is presented to calculate the temporal evolution of the three-body system composed of two holes and one atom. The probability of desorption is calculated as a function of the parameter values of the fundamental interactions. It is shown that the on-site Coulomb repulsion plays an important role to stabilize the two-hole state against the neutralization and, therefore, to enhance the probability of desorption of the adatom.

Authors:
; ;  [1]
  1. Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)
Publication Date:
OSTI Identifier:
20719839
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 72; Journal Issue: 20; Other Information: DOI: 10.1103/PhysRevB.72.205335; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; ATOMS; AUGER EFFECT; COULOMB FIELD; CRYSTALS; DESORPTION; EVOLUTION; HOLE MOBILITY; HOLES; LAYERS; PROBABILITY; QUANTUM MECHANICS; SURFACES; THREE-BODY PROBLEM

Citation Formats

Yasui, Akira, Uozumi, Takayuki, and Kayanuma, Yosuke. Time evolution of a two-hole state in Auger-induced desorption. United States: N. p., 2005. Web. doi:10.1103/PhysRevB.72.205335.
Yasui, Akira, Uozumi, Takayuki, & Kayanuma, Yosuke. Time evolution of a two-hole state in Auger-induced desorption. United States. doi:10.1103/PhysRevB.72.205335.
Yasui, Akira, Uozumi, Takayuki, and Kayanuma, Yosuke. Tue . "Time evolution of a two-hole state in Auger-induced desorption". United States. doi:10.1103/PhysRevB.72.205335.
@article{osti_20719839,
title = {Time evolution of a two-hole state in Auger-induced desorption},
author = {Yasui, Akira and Uozumi, Takayuki and Kayanuma, Yosuke},
abstractNote = {The dynamics of an Auger-induced desorption of an adatom from the crystal surface is investigated theoretically. A model is proposed which describes the competition between the fundamental interactions in the desorption processes, such as the destabilization of the adatom in the two-hole state, the hopping of the holes to the surface, and the Coulomb repulsion between the localized two holes. A full quantum mechanical formalism is presented to calculate the temporal evolution of the three-body system composed of two holes and one atom. The probability of desorption is calculated as a function of the parameter values of the fundamental interactions. It is shown that the on-site Coulomb repulsion plays an important role to stabilize the two-hole state against the neutralization and, therefore, to enhance the probability of desorption of the adatom.},
doi = {10.1103/PhysRevB.72.205335},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 20,
volume = 72,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}