Low spin wave damping in the insulating chiral magnet Cu2OSeO3
Low spin wave damping in the insulating chiral magnet Cu2OSeO3
Chiral magnets with topologically nontrivial spin order such as Skyrmions have generated enormous interest in both fundamental and applied sciences. We report broadband microwave spectroscopy performed on the insulating chiral ferrimagnet Cu2OSeO3. For the damping of magnetization dynamics, we find a remarkably small Gilbert damping parameter of about 1×10−4 at …