Positron 2D-ACAR in perfect crystals of diamond, Si and Ge: First-principles calculations and experiments

Z. Tang, M. Hasegawa, T. Chiba, M. Saito, H. Sumiya, Z. Q. Li, T. Akahane, Y. Kawazoe, S. Yamaguchi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Positron annihilation characteristics in perfect crystals of diamond, Si and Ge are studied theoretically and experimentally. A first-principles calculation based on the two-component density functional theory is presented. Calculations are found to be in good agreement with our measurements. An interesting difference among experimental two-dimensional angular correlation of annihilation radiation (2D-ACAR) for diamond, Si and Ge is clarified by band by band decomposition for the calculated three-dimensional momentum distributions.

Original languageEnglish
Pages (from-to)411-413
Number of pages3
JournalMaterials Science Forum
Volume255-257
DOIs
Publication statusPublished - 1997

Keywords

  • 2D-ACAR
  • Electronic Structure
  • First-Principles Calculation
  • Semiconductor

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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