Publications in Scientific Journals:
R. Lizárraga, L. Nordström, L. Bergqvist, A. Bergman, E. Sjöstedt, P. Mohn, O. Eriksson:
"Conditions for Noncollinear Instabilities of Ferromagnetic Materials";
Physical Review Letters,
Two criteria have been identified here which determine whether a magnetic metal orders in a
collinear (e.g., ferromagnet) or noncollinear (e.g., spin-spiral) arrangement. These criteria involve the ratio between the strength of the exchange interaction and the width of the electron bands, as well as Fermi-surface nesting between spin-up and spin-down sheets of the Fermi surface. Based on our analysis we predict that even typical ferromagnetic materials (e.g., Fe, Co, and Ni) should be possible to stabilize in a noncollinear magnetic order in, e.g., high pressure experiments.
DOI: 10.1103/PhysRevLett.93.107205 PACS numbers: 75.25.+z
Online library catalogue of the TU Vienna:
Created from the Publication Database of the Vienna University of Technology.