Magnons in Metallic Altermagnetic ${\text{KV}}_2{\text{Se}}_2\text{O}$

Daniel Lourenço R. Santos, António T. Costa

We investigate the spin excitation in altermagnetic vanadium oxyselenides, focusing on the metallic quasi-two-dimensional compound ${\text{KV}}_2{\text{Se}}_2\text{O}$. Using a fermion…