TY - JOUR
T1 - Spin-wave relaxation by Eddy Currents in Y3Fe5 O12/Pt bilayers and a way to suppress it
AU - Bunyaev, Sergey A.
AU - Serha, Rostyslav O.
AU - Musiienko-Shmarova, Halyna Yu
AU - Kreil, Alexander J.E.
AU - Frey, Pascal
AU - Bozhko, Dmytro A.
AU - Vasyuchka, Vitaliy I.
AU - Verba, Roman V.
AU - Kostylev, Mikhail
AU - Hillebrands, Burkard
AU - Kakazei, Gleb N.
AU - Serga, Alexander A.
PY - 2020/8
Y1 - 2020/8
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85091858534&partnerID=8YFLogxK
U2 - 10.1103/PhysRevApplied.14.024094
DO - 10.1103/PhysRevApplied.14.024094
M3 - Article
AN - SCOPUS:85091858534
SN - 2331-7019
VL - 14
JO - Physical Review Applied
JF - Physical Review Applied
IS - 2
M1 - 024094
ER -