American Institute of Physics/American Physical Society
Erscheinungsjahr:
2012
Medientyp:
Text
Schlagworte:
Physics - Materials Science
Physics
Materials Science
530: Physik
ddc:530
Beschreibung:
The study of the spin excitations in antiferromagnetic (AFM) and ferromagnetic (FM) phases of FeRh is reported. We demonstrate that although the Fe atomic moments are well defined there is a number of important phenomena absent in the Heisenberg description: Landau damping of spin waves, large Rh moments induced by the AFM magnons, the formation of the optical magnons terminated by Stoner excitations. We relate the properties of the spin-wave damping to the features of the Stoner continuum and compare the chirality of the spin excitations in AFM, FM and paramagnetic (PM) systems.