Spin-Wave Relaxation by Eddy Currents in Y3Fe5O12/Pt Bilayers and a Way to Suppress It

• Tipo: Artigo em Revista Científica Internacional
• Data: 2020

Autores

Bunyaev, SA (Autor) FCUP; Serha, RO (Autor) Outra; Musiienko Shmarova, HY (Autor) Outra; Kreil, AJE (Autor) Outra; Frey, P (Autor) Outra; Bozhko, DA (Autor) Outra; Vasyuchka, VI (Autor) Outra; Verba, RV (Autor) Outra; Kostylev, M (Autor) Outra; Hillebrands, B (Autor) Outra; G.N. Kakazei (Autor) FCUP; Serga, AA (Autor) Outra

Revista

Título: Physical Review Applied

Vol. 14

ISSN: 2331-7019

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 11 Citações

Scopus - 12 Citações

Outras Informações

ID Authenticus: P-00S-QF3

DOI: 10.1103/physrevapplied.14.024094

Abstract (EN): Because of their record-low intrinsic magnetic damping properties, single-crystal yttrium-iron-garnet (YIG) films serve as an excellent model medium for studying magnon-induced spintronic phenomena such as spin pumping and the spin-orbit torque effect. For this purpose, YIG films are covered with sub-skin-depth layers of nonmagnetic heavy metals with strong spin-orbit coupling. In the present work, we show experimentally and theoretically that ohmic losses of spin-wave-induced microwave eddy currents in the heavy-metal layer deliver a strong contribution to spin-wave damping in these hybrid structures. We demonstrate that this adverse effect can be controlled and largely eliminated by placing a highly conducting metal plate near to the surface of the YIG/Pt structures. These findings are of value for a proper interpretation of experiments on the magnon spintronic effects and for the design of future magnon spintronic devices.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7