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Related Concept Videos

Metallic Solids02:37

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
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Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
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Atomic Force Microscopy01:08

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Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

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Updated: Jul 19, 2026

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
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Substrate mediated long-range oscillatory interaction between adatoms: Cu /Cu(111).

J Repp1, F Moresco, G Meyer

  • 1Institut fur Experimentalphysik, Freie Universitat Berlin, Arnimallee 14, D-14195 Berlin, Germany.

Physical Review Letters
|September 27, 2000
PubMed
Summary

Researchers quantified the interaction between copper adatoms on a copper surface. This interaction, mediated by surface electrons, is oscillatory and impacts copper growth at low temperatures.

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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

Area of Science:

  • Surface Science
  • Condensed Matter Physics
  • Materials Science

Background:

  • Understanding adatom interactions is crucial for controlling thin film growth.
  • The electronic properties of surfaces, like the two-dimensional surface-state band in Cu(111), mediate interactions between adsorbed atoms.
  • Previous studies have explored adatom interactions, but quantitative characterization of long-range oscillatory potentials is ongoing.

Purpose of the Study:

  • To quantitatively determine the long-range interaction potential between single copper adatoms on a Cu(111) surface.
  • To investigate the role of the two-dimensional surface-state band in mediating this interaction.
  • To understand how this interaction influences the growth of copper films at low temperatures.

Main Methods:

  • Utilizing scanning tunneling microscopy (STM) to image copper adatoms on Cu(111) at low temperatures (9-21 K).
  • Analyzing the distance distribution between pairs of adatoms from STM images to extract the interaction potential.
  • Characterizing the oscillatory nature and distance dependence of the interaction.

Main Results:

  • The interaction potential between copper adatoms is oscillatory with a period of half the Fermi wavelength.
  • The interaction decays with distance as 1/d(2) for larger separations.
  • Five distinct potential minima were identified for adatom separations up to 70 Angstroms.
  • The identified interaction significantly alters the growth behavior of Cu/Cu(111) at low temperatures.

Conclusions:

  • The long-range interaction between copper adatoms on Cu(111) is well-described by an oscillatory potential mediated by surface state electrons.
  • This interaction plays a significant role in the initial stages of copper film growth on Cu(111) at low temperatures.
  • The findings provide fundamental insights into adatom dynamics and their impact on nanostructure formation.