Related Experiment Video
Updated: Apr 17, 2026

Author Spotlight: Evaluation of Protein-Condensate Dynamics in Live Human Cells
Published on: January 5, 2024
Direct observation of the Dzyaloshinskii-Moriya interaction in a Pt/Co/Ni film
Kai Di1, Vanessa Li Zhang1, Hock Siah Lim1
1Department of Physics, National University of Singapore, Singapore 117551, Singapore.
Abstract:
The interfacial Dzyaloshinskii-Moriya interaction in an in-plane anisotropic Pt(4 nm)/Co(1.6 nm)/Ni(1.6 nm) film has been directly observed by Brillouin spectroscopy. It is manifested as the asymmetry of the measured magnon dispersion relation, from which the Dzyaloshinskii-Moriya interaction constant has been evaluated. Linewidth measurements reveal that the lifetime of the magnons is asymmetric with respect to their counter-propagating directions. The lifetime asymmetry is dependent on the magnon frequency, being more pronounced, the higher the frequency. Analytical calculations of the magnon dispersion relation and linewidth agree well with experiments.
Related Concept Videos
Actor-Observer Effect
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
Interaction of EM Radiation with Matter: Spectroscopy
Atomic Emission Spectroscopy: Interference
Atomic Nuclei: Magnetic Resonance
Atomic Force Microscopy
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

