Recovering the Fermi surface with 2D-ACAR spectroscopy in samples with defects

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Abstract

When two-dimensional angular correlation of positron annihilation radiation (2D-ACAR) experiments are performed in metals containing defects, conventional analysis in which the measured momentum distribution is folded back into the first Brillouin zone is rendered ineffective due to the contribution from positrons annihilating from the defect. However, by working with the radial anisotropy of the spectrum, it is shown that an image of the Fermi surface can be recovered since the defect contribution is essentially isotropic.

Original languageEnglish
Article number012046
Pages (from-to)1 - 5
Number of pages5
JournalJournal of Physics: Conference Series
Volume505
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014

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