Interface-induced optical effects in magnetic two- and three-layer films

被引：7

作者：

Kolmychek, I. A. ^{[1
]}

Radovskaya, V. V. ^{[1
]}

Mamonov, E. A. ^{[1
]}

Maydykovskiy, A., I ^{[1
]}

Sadovnikov, A., V ^{[2
]}

Sheshukova, S. E. ^{[2
]}

Nikitov, S. A. ^{[2
]}

Temiryazeva, M. P. ^{[3
]}

Gusev, N. S. ^{[4
]}

Fraerman, A. A. ^{[4
]}

Murzina, T., V ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Dept Phys, Moscow 119991, Russia

[2] Saratov State Univ Russia, Lab Magnet Metamat, Astrakhanskaya Str 83, Saratov 410012, Saratov Oblast, Russia

[3] RAS, Fryazino Branch, Kotelnikov Inst Radioengn & Elect, Vvedensky Sq 1, Fryazino 141190, Russia

[4] RAS, Inst Phys Microstruct, GSP 105, Nizhnii Novgorod 603950, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2021年 / 528卷

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

Pt/Co/Ta and Pt/Co/Pt nanolayered structure; Asymmetric Brillouin light scattering; Optical second harmonic generation; 2ND-HARMONIC GENERATION;

D O I：

10.1016/j.jmmm.2021.167780

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multilayer planar nanostructures formed by ferromagnetic and heavy metals can reveal unique properties governed by their composition and geometry. The main role in their formation belongs to the interfacial spin-orbit interaction leading to specific magnetic distributions and behavior at the nanoscale. Here we present a complex analysis of magneto-optical effects in nanolayered films composed of different combinations of cobalt nanolayers with tantalum and platinum ones. Magnetic force microscopy studies confirm inhomogeneous magnetization distribution in {Ta, Pt}/Co and {Ta, Pt}/Co/{Ta, Pt} films, which can be described in terms of magnetic ripple domain or chiral structures. Experiments on the Brillouin light scattering directly confirm the appearance of the interface Dzyaloshinskii-Moriya interaction in the studied films, the effect increases with the structural asymmetry. Finally, interface-sensitive second harmonic generation (SHG) reveals odd in magnetic field SHG intensity effect for the longitudinal geometry of the applied dc magnetic field that is absent for homogeneously magnetized structures.

引用

页数：6

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