Repulsive interaction of the helium atom with a metal surface

Research output: Contribution to journalArticle

Researchers

Research units

  • University of Helsinki
  • Nordita
  • Cornell University

Abstract

The repulsive part of the helium scattering potential at a surface is approximately proportional to the surface electron density. The proportionality coefficient is shown to be a well-defined quantity, which can be related to the electron-helium scattering length. The spread in the values of the proportionality constant suggested in the literature is shown to be due to different definitions of the coefficient or due to inadequate calculational methods. The value calculated using the local density approximation with a self-interaction correction is in very good agreement with the electron-scattering-length measurements.

Details

Original languageEnglish
Pages (from-to)2314-2316
Number of pages3
JournalPhysical Review B
Volume29
Issue number4
Publication statusPublished - 15 Feb 1984
MoE publication typeA1 Journal article-refereed

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ID: 6506357