講演情報
[7a-N302-1]Anisotropic Gilbert damping in the V/Fe/MgO multilayer
〇(D)Jieyi Chen1, Shoya Sakamoto1, Ivan Kurniawan2, Hidetoshi Kosaki1, Erkang Wei1, Tempei Hatajiri1, Keisuke Masuda2, Shinji Miwa1,3 (1.ISSP-UTokyo, 2.NIMS, 3.TSQS-UTokyo)
キーワード：
Spin dynamic、Anisotropic Gilbert damping
The intrinsic Gilbert damping constant in magnetic multilayers represents the dynamic behavior of ferromagnetic materials. In this study, we systematically investigate the anisotropy of the Gilbert damping in the V/Fe/MgO system, focusing on its dependence on the out-of-plane magnetization direction. We have fabricated the V (8 nm)/Fe (0.6-1.2 nm)/MgO (0.5 nm) multilayers by molecular beam epitaxy and characterized the intrinsic Gilbert damping by the time-resoved magneto-optic Kerr effect. We found that the Gilbert damping increases when the direction of the magnetic field angle is changed from in-plane to out-of-plane. We have also conducted a first principles calculation and compared with the experimental results. Specifically, bulk and interfacial effects on the anisotropic Gilbert damping will be discussed.