Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy Metals
Properties of nanolayers can substantially differ from those of bulky materials, in part due to pronounced interface effects. It is known that combinations of layers of heavy and ferromagnetic metals leads to the appearance of specific spin textures induced by interface-induced Dzyaloshinskyi–Moria...
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| Online Access: | https://www.mdpi.com/1996-1944/14/13/3573 |
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| author | Evgeniy Mamonov Irina Kolmychek Victoria Radovskaya Igor Pashen’kin Nikita Gusev Anton Maydykovskiy Marina Temiryazeva Alexei Temiryazev Tatiana Murzina |
| author_facet | Evgeniy Mamonov Irina Kolmychek Victoria Radovskaya Igor Pashen’kin Nikita Gusev Anton Maydykovskiy Marina Temiryazeva Alexei Temiryazev Tatiana Murzina |
| author_sort | Evgeniy Mamonov |
| collection | DOAJ |
| description | Properties of nanolayers can substantially differ from those of bulky materials, in part due to pronounced interface effects. It is known that combinations of layers of heavy and ferromagnetic metals leads to the appearance of specific spin textures induced by interface-induced Dzyaloshinskyi–Moria interaction (DMI), which attracts much interest and requires further studies. In this paper, we study magneto-optical effects in two- and three-layer films composed of a few nanometer thick Co layer adjacent to nanofilms of non-magnetic materials (Pt, W, Cu, Ta, MgO). For experimental studies of the interface magnetization-induced effects, we used the optical second harmonic generation (SHG) technique known for its high sensitivity to the symmetry breaking. We found that the structural asymmetry leads to the increase of the averaged SHG intensity, as well as to the magnetic field-induced effects in SHG. Moreover, by choosing the proper geometry of the experiment, we excluded the most studied linear in magnetization SHG contributions and, thus, succeeded in studying higher order in magnetization and non-local magnetic effects. We revealed odd in magnetization SHG effects consistent with the phenomenological description involving inhomogeneous (gradient) magnetization distribution at interfaces and found them quite pronounced, so that they should be necessarily taken into account when analyzing the non-linear magneto-optical response of nanostructures. |
| first_indexed | 2024-03-10T10:01:37Z |
| format | Article |
| id | doaj.art-644ee2c1800d48fa8a75ce645cf98dd5 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T10:01:37Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-644ee2c1800d48fa8a75ce645cf98dd52023-11-22T01:50:48ZengMDPI AGMaterials1996-19442021-06-011413357310.3390/ma14133573Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy MetalsEvgeniy Mamonov0Irina Kolmychek1Victoria Radovskaya2Igor Pashen’kin3Nikita Gusev4Anton Maydykovskiy5Marina Temiryazeva6Alexei Temiryazev7Tatiana Murzina8Department of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, 1, 62, 119991 Moscow, RussiaDepartment of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, 1, 62, 119991 Moscow, RussiaDepartment of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, 1, 62, 119991 Moscow, RussiaInstitute for Physics of Microstructures RAS, GSP-105, 603950 Nizhny Novgorod, RussiaInstitute for Physics of Microstructures RAS, GSP-105, 603950 Nizhny Novgorod, RussiaDepartment of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, 1, 62, 119991 Moscow, RussiaKotel’nikov Institute of Radioengineering and Electronics of RAS, Fryazino Branch, Vvedensky Sq. 1, 141190 Fryazino, RussiaKotel’nikov Institute of Radioengineering and Electronics of RAS, Fryazino Branch, Vvedensky Sq. 1, 141190 Fryazino, RussiaDepartment of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, 1, 62, 119991 Moscow, RussiaProperties of nanolayers can substantially differ from those of bulky materials, in part due to pronounced interface effects. It is known that combinations of layers of heavy and ferromagnetic metals leads to the appearance of specific spin textures induced by interface-induced Dzyaloshinskyi–Moria interaction (DMI), which attracts much interest and requires further studies. In this paper, we study magneto-optical effects in two- and three-layer films composed of a few nanometer thick Co layer adjacent to nanofilms of non-magnetic materials (Pt, W, Cu, Ta, MgO). For experimental studies of the interface magnetization-induced effects, we used the optical second harmonic generation (SHG) technique known for its high sensitivity to the symmetry breaking. We found that the structural asymmetry leads to the increase of the averaged SHG intensity, as well as to the magnetic field-induced effects in SHG. Moreover, by choosing the proper geometry of the experiment, we excluded the most studied linear in magnetization SHG contributions and, thus, succeeded in studying higher order in magnetization and non-local magnetic effects. We revealed odd in magnetization SHG effects consistent with the phenomenological description involving inhomogeneous (gradient) magnetization distribution at interfaces and found them quite pronounced, so that they should be necessarily taken into account when analyzing the non-linear magneto-optical response of nanostructures.https://www.mdpi.com/1996-1944/14/13/3573second harmonic generationmagnetic thin filmsinhomogeneous magnetization |
| spellingShingle | Evgeniy Mamonov Irina Kolmychek Victoria Radovskaya Igor Pashen’kin Nikita Gusev Anton Maydykovskiy Marina Temiryazeva Alexei Temiryazev Tatiana Murzina Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy Metals Materials second harmonic generation magnetic thin films inhomogeneous magnetization |
| title | Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy Metals |
| title_full | Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy Metals |
| title_fullStr | Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy Metals |
| title_full_unstemmed | Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy Metals |
| title_short | Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy Metals |
| title_sort | interface driven effects in magnetization induced optical second harmonic generation in layered films composed of ferromagnetic and heavy metals |
| topic | second harmonic generation magnetic thin films inhomogeneous magnetization |
| url | https://www.mdpi.com/1996-1944/14/13/3573 |
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