%0 Journal Article
%A dos Santos Dias, Manuel
%A Schweflinghaus, B.
%A Blügel, S.
%A Lounis, S.
%T Relativistic dynamical spin excitations of magnetic adatoms
%J Physical review / B
%V 91
%N 7
%@ 1098-0121
%C College Park, Md.
%I APS
%M FZJ-2015-02795
%P 075405
%D 2015
%X We present a first-principles theory of dynamical spin excitations in the presence of spin-orbit coupling. The broken global spin rotational invariance leads to a new sum rule. We explore the competition between the magnetic anisotropy energy and the external magnetic field, as well as the role of electron-hole excitations, through calculations for 3d-metal adatoms on the Cu(111) surface. The spin excitation resonance energy and lifetime display nontrivial behavior, establishing the strong impact of relativistic effects. We legitimate the use of the Landau-Lifshitz-Gilbert equation down to the atomic limit, but with parameters that differ from a stationary theory.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000349247900003
%R 10.1103/PhysRevB.91.075405
%U https://juser.fz-juelich.de/record/189765