TY  - JOUR
AU  - dos Santos Dias, Manuel
AU  - Schweflinghaus, B.
AU  - Blügel, S.
AU  - Lounis, S.
TI  - Relativistic dynamical spin excitations of magnetic adatoms
JO  - Physical review / B
VL  - 91
IS  - 7
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2015-02795
SP  - 075405
PY  - 2015
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000349247900003
DO  - DOI:10.1103/PhysRevB.91.075405
UR  - https://juser.fz-juelich.de/record/189765
ER  -