Low spin wave damping in the insulating chiral magnet Cu2OSeO3 - Kölner UniversitätsPublikationsServer

Stasinopoulos, I., Weichselbaumer, S., Bauer, A., Waizner, J., Berger, H., Maendl, S., Garst, M., Pfleiderer, C. and Grundler, D. (2017). Low spin wave damping in the insulating chiral magnet Cu2OSeO3. Appl. Phys. Lett., 111 (3). MELVILLE: AMER INST PHYSICS. ISSN 1077-3118

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DOI:10.1063/1.4995240

Abstract

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 X 10(-4) at 5K. This value is only a factor of 4 larger than the one reported for the best insulating ferrimagnet yttrium iron garnet at room temperature. We detect a series of sharp resonances and attribute them to confined spin waves in the mm-sized samples. Considering the small damping, insulating chiral magnets turn out to be promising candidates when exploring non-collinear spin structures for high frequency applications. Published by AIP Publishing.

Item Type:

Journal Article

Creators:

Creators	Email	ORCID	ORCID Put Code
Stasinopoulos, I.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Weichselbaumer, S.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Bauer, A.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Waizner, J.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Berger, H.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Maendl, S.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Garst, M.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Pfleiderer, C.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Grundler, D.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED