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Interface Driven Effects in Magnetization-Induced Optical Second Harmonic Generation in Layered Films Composed of Ferromagnetic and Heavy Metalsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 августа 2021 г.
- Авторы: Mamonov Evgeniy, Kolmychek Irina, Radovskaya Victoria, Pashen’kin Igor, Gusev Nikita, Maydykovskiy Anton, Temiryazeva Marina, Temiryazev Alexei, Murzina Tatiana
- Журнал: Materials
- Том: 14
- Номер: 13
- Год издания: 2021
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 3573
- DOI: 10.3390/ma14133573
- Аннотация: Properties of nanolayers can substantially differ from those of bulky materials, in partdue 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-inducedDzyaloshinskyi–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 fewnanometer 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 secondharmonic generation (SHG) technique known for its high sensitivity to the symmetry breaking. Wefound that the structural asymmetry leads to the increase of the averaged SHG intensity, as well asto the magnetic field-induced effects in SHG. Moreover, by choosing the proper geometry of theexperiment, 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 revealedodd in magnetization SHG effects consistent with the phenomenological description involving inhomogeneous (gradient) magnetization distribution at interfaces and found them quite pronounced, sothat they should be necessarily taken into account when analyzing the non-linear magneto-opticalresponse of nanostructures.
- Добавил в систему: Колмычек Ирина Алексеевна