Dependence of interfacial Dzyaloshinskii?Moriya interaction and perpendicular magnetic anisotropy on the thickness of the heavy-metal layer

Title
Dependence of interfacial Dzyaloshinskii?Moriya interaction and perpendicular magnetic anisotropy on the thickness of the heavy-metal layer
Authors
한동수Nam-Hui KimJinyong JungHenk JM SwagtenJune-Seo KimChun-Yeol YouKwonjin Park
Issue Date
2017-09
Publisher
Applied Physics Express
Citation
VOL 10, NO 10, 103003
Abstract
The interfacial Dzyaloshinskii-Moriya interaction (iDMI) and the interfacial perpendicular magnetic anisotropy (iPMA) between a heavy metal and ferromagnet are investigated by employing Brillouin light scattering. With increasing thickness of the heavy-metal (Pt) layer, the iDMI and iPMA energy densities are rapidly enhanced and they saturate for a Pt thickness of 2.4 nm. Since these two individual magnetic properties show the same Pt thickness dependence, this is evidence that the iDMI and iPMA at the interface between the heavy metal and ferromagnet, the physical origin of these phenomena, are effectively enhanced upon increasing the thickness of the heavy-metal layer.
URI
http://pubs.kist.re.kr/handle/201004/70762
ISSN
1882-0778
Appears in Collections:
KIST Publication > Article
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