TY  - JOUR
AU  - Bouaziz, Juba
AU  - Mendive-Tapia, Eduardo
AU  - Blügel, Stefan
AU  - Staunton, Julie B.
TI  - Fermi-Surface Origin of Skyrmion Lattices in Centrosymmetric Rare-Earth Intermetallics
JO  - Physical review letters
VL  - 128
IS  - 15
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2022-01929
SP  - 157206
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000792585200012
DO  - DOI:10.1103/PhysRevLett.128.157206
UR  - https://juser.fz-juelich.de/record/907267
ER  -