- » Welcome
- » Research
- Ab-initio theory of superconductivity
- Optical properties of solids
- Analysis and control of electron dynamics
- Quantum transport
- Correlated electron-nuclear motion
- Development of functional theories for static and time-dependent quantum systems
- ELK code development
- Ab-initio theory of strongly-correlated systems
- Oxidic surfaces and interfaces
- Magnetic nanostructures
- Magnons in complex materials
- » People
- » Publications
Sandratskii, L. M., Buczek, P.
Lifetimes and chirality of spin waves in antiferromagnetic and ferromagnetic FeRh from the perspective of time-dependent density functional theory
Physical Review B 85, (2),pp 020406(R)/1-4 (2012)
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, and 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 systems.
TH-2012-04