W adatom-adatom interactions on the W(110) surface

Wei Xu, James Adams

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We report a theoretical study of W adatom-adatom interactions on the W(110) surface, using a modified fourth moment approximation to tight-binding theory. The binding sites and interaction energies of adatom pairs on the (110) surface are determined. The present calculations indicate a strong angular anisotropy for adatom-adatom interactions and oscillatory behavior of interactions along a given direction which is consistent with recent field ion microscopy (FIM) observations [Watanabe and Ehrlich, Phys. Rev. Lett. 62 (1989) 1146]. A simple bond coordination argument has been proposed to explain the short range interactions. For long ranges, the interaction is slightly repulsive, due to indirect elastic interactions via the substrate.

Original languageEnglish (US)
Pages (from-to)241-246
Number of pages6
JournalSurface Science
Volume339
Issue number3
DOIs
StatePublished - Oct 1 1995
Externally publishedYes

Fingerprint

Adatoms
adatoms
interactions
Binding sites
Microscopic examination
Anisotropy
Binding Sites
Ions
Substrates
microscopy
moments
anisotropy
approximation

Keywords

  • Adatoms
  • Atom-solid interactions
  • Clusters
  • Computer simulations
  • Construction and use of effective interatomic interactions
  • Diffusion and migration
  • Single crystal surfaces
  • Surface diffusion
  • Tungsten

ASJC Scopus subject areas

  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry

Cite this

W adatom-adatom interactions on the W(110) surface. / Xu, Wei; Adams, James.

In: Surface Science, Vol. 339, No. 3, 01.10.1995, p. 241-246.

Research output: Contribution to journalArticle

Xu, Wei ; Adams, James. / W adatom-adatom interactions on the W(110) surface. In: Surface Science. 1995 ; Vol. 339, No. 3. pp. 241-246.
@article{faf39e60832840609a406fffc1c7210a,
title = "W adatom-adatom interactions on the W(110) surface",
abstract = "We report a theoretical study of W adatom-adatom interactions on the W(110) surface, using a modified fourth moment approximation to tight-binding theory. The binding sites and interaction energies of adatom pairs on the (110) surface are determined. The present calculations indicate a strong angular anisotropy for adatom-adatom interactions and oscillatory behavior of interactions along a given direction which is consistent with recent field ion microscopy (FIM) observations [Watanabe and Ehrlich, Phys. Rev. Lett. 62 (1989) 1146]. A simple bond coordination argument has been proposed to explain the short range interactions. For long ranges, the interaction is slightly repulsive, due to indirect elastic interactions via the substrate.",
keywords = "Adatoms, Atom-solid interactions, Clusters, Computer simulations, Construction and use of effective interatomic interactions, Diffusion and migration, Single crystal surfaces, Surface diffusion, Tungsten",
author = "Wei Xu and James Adams",
year = "1995",
month = "10",
day = "1",
doi = "10.1016/0039-6028(95)00653-2",
language = "English (US)",
volume = "339",
pages = "241--246",
journal = "Surface Science",
issn = "0039-6028",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - W adatom-adatom interactions on the W(110) surface

AU - Xu, Wei

AU - Adams, James

PY - 1995/10/1

Y1 - 1995/10/1

N2 - We report a theoretical study of W adatom-adatom interactions on the W(110) surface, using a modified fourth moment approximation to tight-binding theory. The binding sites and interaction energies of adatom pairs on the (110) surface are determined. The present calculations indicate a strong angular anisotropy for adatom-adatom interactions and oscillatory behavior of interactions along a given direction which is consistent with recent field ion microscopy (FIM) observations [Watanabe and Ehrlich, Phys. Rev. Lett. 62 (1989) 1146]. A simple bond coordination argument has been proposed to explain the short range interactions. For long ranges, the interaction is slightly repulsive, due to indirect elastic interactions via the substrate.

AB - We report a theoretical study of W adatom-adatom interactions on the W(110) surface, using a modified fourth moment approximation to tight-binding theory. The binding sites and interaction energies of adatom pairs on the (110) surface are determined. The present calculations indicate a strong angular anisotropy for adatom-adatom interactions and oscillatory behavior of interactions along a given direction which is consistent with recent field ion microscopy (FIM) observations [Watanabe and Ehrlich, Phys. Rev. Lett. 62 (1989) 1146]. A simple bond coordination argument has been proposed to explain the short range interactions. For long ranges, the interaction is slightly repulsive, due to indirect elastic interactions via the substrate.

KW - Adatoms

KW - Atom-solid interactions

KW - Clusters

KW - Computer simulations

KW - Construction and use of effective interatomic interactions

KW - Diffusion and migration

KW - Single crystal surfaces

KW - Surface diffusion

KW - Tungsten

UR - http://www.scopus.com/inward/record.url?scp=0029392225&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029392225&partnerID=8YFLogxK

U2 - 10.1016/0039-6028(95)00653-2

DO - 10.1016/0039-6028(95)00653-2

M3 - Article

AN - SCOPUS:0029392225

VL - 339

SP - 241

EP - 246

JO - Surface Science

JF - Surface Science

SN - 0039-6028

IS - 3

ER -