Study on Momentum Density of Electrons and Fermi Surface in Niobium by Positron Annihilation

Takeshi Kubota, Hitoshi Kondo, Kazuhiro Watanabe, Yasukazu Murakami, Yang Koo Cho, Shoichiro Tanigawa, Takao Kawano, Gun Woong Bahng

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The three dimensional electron-positron momentum density in niobium has been reconstructed from measurements of two dimensional angular correlation of positron annihilation radiations (2D-ACAR) followed by the image reconstruction technique based on a direct Fourier transformation. We determined the position of the Fermi surface sheets; Γ-centered hole octahedron, multiply connected jungle-gym arms and TV-centered hole ellipsoids. The Fermi surface topology is in good agreement with the theory.

Original languageEnglish
Pages (from-to)4494-4502
Number of pages9
Journaljournal of the physical society of japan
Volume59
Issue number12
DOIs
Publication statusPublished - 1990 Jan 1

Keywords

  • 2D-ACAR
  • Fermi surface
  • experiment
  • momentum density
  • niobium
  • positron annihilation
  • three dimensional reconstruction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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