Positron annihilation study of the electronic structure of URu2Si2: Fermi surface and hidden order parameter
2009 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 79, no 8, 085115- p.Article in journal (Refereed) Published
The Fermi surface (FS) of URu2Si2 in the paramagnetic phase has been reinvestigated via the measurement of the two-dimensional angular correlation of the positron annihilation radiation. Unlike previous measurements our experiment provides evidence that density-functional theory gives a fair qualitative description of the FS, showing a large contribution from the 5f electrons, although the Fermi volume of electron and hole pockets determined experimentally is smaller than the theoretical description. Furthermore, we propose a method to investigate the nature of the hidden order responsible for the 17.5 K transition.
Place, publisher, year, edition, pages
2009. Vol. 79, no 8, 085115- p.
Fermi surface, paramagnetic materials, positron annihilation, ruthenium alloys, silicon alloys, uranium alloys
IdentifiersURN: urn:nbn:se:uu:diva-129936DOI: 10.1103/PhysRevB.79.085115ISI: 000263816000028OAI: oai:DiVA.org:uu-129936DiVA: diva2:345609