Počet záznamů: 1

Positron annihilation study of the electronic structure of URu.sub.2./sub.Si.sub.2./sub.: Fermi surface and hidden order parameter

  1. 1.
    0340460 - FZU-D 2010 RIV US eng J - Článek v odborném periodiku
    Biasini, M. - Rusz, Ján - Mills, A.
    Positron annihilation study of the electronic structure of URu2Si2: Fermi surface and hidden order parameter.
    Physical Review. B. Roč. 79, č. 8 (2009), 085115/1-085115/10 ISSN 1098-0121
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: positron annihilation * 2D-ACAR * URu2Si2 * density functional theory * hidden order * Fermi surface
    Kód oboru RIV: BE - Teoretická fyzika
    Impakt faktor: 3.475, rok: 2009
    http://prb.aps.org/abstract/PRB/v79/i8/e085115

    he 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.
    Trvalý link: http://hdl.handle.net/11104/0183684