Magnons (spin-waves) in magnetic materials offer the potential for fast and efficient information processing. To avoid excessive damping due to free electrons, one is typically limited to magnetic insulators as host materials. Here, Poelchen et al demonstrate long lived spin-waves, at terahertz frequencies in the metallic antiferromaget CeCo2P2, opening up the possibility of using metallic aniferromagnets for spinwave information processing.
- G. Poelchen
- J. Hellwig
- K. Kummer
