Presentation Information
[10p-PA3-10]Study on anti-magnon using magnetic superlattice metamaterials.
〇Kazuyuki Nakayama1, Toshiyuki Kodama2, Satoshi Tomita2 (1.ICEPP UTokyo, 2.Tohoku Univ.)
Keywords:
non-equilibrium spin dynamics,spin orbit torque,magnetic metamaterials
Antiparticles predicted by Dirac theory constitute a fundamental concept that appears in a wide range of physical phenomena. In this study, we focus on an antiparticle-like quasiparticle in magnetic systems, the so-called anti-magnon, and attempt its generation and control using magnetic superlattice metamaterials. By controlling the relaxation processes via spin–orbit torque, we aim to realize an anti-magnon state and experimentally verify quasiparticle pair creation processes.