%0 Journal Article
%A Bouaziz, Juba
%A Mendive-Tapia, Eduardo
%A Blügel, Stefan
%A Staunton, Julie B.
%T Fermi-Surface Origin of Skyrmion Lattices in Centrosymmetric Rare-Earth Intermetallics
%J Physical review letters
%V 128
%N 15
%@ 0031-9007
%C College Park, Md.
%I APS
%M FZJ-2022-01929
%P 157206
%D 2022
%X We show from first principles that barrel-shaped structures within the Fermi surface of the centrosymmetric intermetallic compounds GdRu2Si2 and Gd2PdSi3 give rise to Fermi surface nesting, which determines the strength and sign of quasi-two-dimensional Ruderman-Kittel-Kasuya-Yosida pairwise exchange interactions between the Gd moments. This is the principal mechanism leading to their helical single-q spin-spiral ground states, providing transition temperatures and magnetic periods in good agreement with experiment. Using atomistic spin-dynamic simulations, we draw a direct line between the subtleties of the three-dimensional Fermi surface topology and the stabilization of a square skyrmion lattice in GdRu2Si2 at applied magnetic fields as observed in experiment.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000792585200012
%R 10.1103/PhysRevLett.128.157206
%U https://juser.fz-juelich.de/record/907267