Positron wave-function effects in the measurement of the two-dimensional angular correlation of the annihilation radiation of a spin-polarized system
2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 75, no 23, 235115- p.Article in journal (Refereed) Published
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 CrO2 [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.
Place, publisher, year, edition, pages
2007. Vol. 75, no 23, 235115- p.
IdentifiersURN: urn:nbn:se:uu:diva-144259DOI: 10.1103/PhysRevB.75.235115ISI: 000247624900052OAI: oai:DiVA.org:uu-144259DiVA: diva2:392911