Open AccessЛинейные и нелинейные магнитооптические явления в эпитаксиальных плeнках халькогенидов европия EuX (X=O, Se, Te)
Author(s) -
В.В. Павлов
Publication year - 2019
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2019.03.47248.263
Subject(s) - europium , condensed matter physics , hyperpolarizability , magnetic moment , spins , faraday effect , polaron , faraday cage , materials science , chemistry , physics , ion , nonlinear optical , magnetic field , nonlinear system , quantum mechanics , electron
The studies of magneto-optical effects in epitaxial films of magnetic semiconductors—europium chalcogenides EuX (X = O, Se, Te) are presented: linear and quadratic magneto-optical Kerr effects, photo-induced Faraday effect, magnetically-induced optical second and third harmonics generation, the inverse Faraday effect, and the phenomenon of optical orientation. A large quadratic magneto-optical Kerr effect was found in EuO and (Eu, Gd)O films. Photo-induced spin polarons with a huge value of the magnetic moment were studied in europium chalcogenides EuTe and EuSe using the optical pump-probe technique. In the same materials, a new type of nonlinear magneto-optical susceptibility, which is responsible for the optical second harmonic generation and associated with the magnetic ordering of the spins of Eu^2+ ions, is revealed.