Abstract
In positron annihilation studies of the electronic structure of metals, a nonuniform positron density can distort significantly the faithful detection of the Fermi surface. Recently, we have predicted a nearly complete cancellation of the aforementioned distortion in the spin-polarized two-dimensional angular correlation of annihilation radiation experiment on $\mathrm{Cr}{\mathrm{O}}_{2}$ [M. Biasini and J. Rusz, J. Phys.: Condens. Matter 18, L289 (2006)]. We provide a detailed investigation of the predicted effect on several transition-element- and actinide-based systems of increasing complexity, demonstrating that the cancellation effect is of rather general nature.
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