Asymmetric Spin-Wave Dispersion on Fe(110): Direct Evidence of the Dzyaloshinskii-Moriya Interaction
Abstract
The influence of the Dzyaloshinskii-Moriya interaction on the spin-wave dispersion in an Fe double layer grown on W(110) is measured for the first time. It is demonstrated that the Dzyaloshinskii-Moriya interaction breaks the degeneracy of spin waves and leads to an asymmetric spin-wave dispersion relation. An extended Heisenberg spin Hamiltonian is employed to obtain the longitudinal component of the Dzyaloshinskii-Moriya vectors from the experimentally measured energy asymmetry.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 2010
- DOI:
- 10.1103/PhysRevLett.104.137203
- arXiv:
- arXiv:1701.05854
- Bibcode:
- 2010PhRvL.104m7203Z
- Keywords:
-
- 75.30.Ds;
- 75.50.Bb;
- 75.70.Ak;
- 75.70.Rf;
- Spin waves;
- Fe and its alloys;
- Magnetic properties of monolayers and thin films;
- Surface magnetism;
- Condensed Matter - Materials Science;
- Condensed Matter - Other Condensed Matter
- E-Print:
- Phys. Rev. Lett. 104, 137203 (2010)