Ultrafast spin dynamics and inverse spin Hall effect in nanostructures with giant spin-orbit coupling
K.A. Zvezdina,c aProkhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119942, Russian Federation bLebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation cKintech Lab Ltd., ul. 3-ya Khoroshevskaya 12, Moscow, 123298, Russian Federation
The features of ultrafast spin dynamics excitation using high-intensity femtosecond laser pulses in magnetic materials are reviewed. Key mechanisms of a pump pulse action on the spin system of a magnetic material are discussed, including the inverse Faraday effect in yttrium-iron garnet; induced magnetic anisotropy in thulium orthoferrite; and thermal driving the magnetic system out of equilibrium in the case of the metallic ferrimagnet GdFeCo, which is a promising material for magnetic memory and terahertz spintronics. It was shown that, apart from using conventional magneto-optical methods for probing the magnetization dynamics in magnetic heterostructures, one can also use the inverse spin Hall effect, an approach that potentially enables the development of memory elements in which the ultrafast optical control of magnetization is combined with electric detection.
Keywords: ultrafast spin dynamics, inverse spin Hall effect, spin pumping, magnetic nanodots, inverse Faraday effect, photomagnetic effect, photomagnetic anisotropy, laser pulse demagnetization, critical enhancement of dynamics PACS:75.75.−c, 75.76.+j, 75.78.Cd, 75.78.Jp, 78.20.Ls (all) DOI:10.3367/UFNe.2017.12.038309 URL: https://ufn.ru/en/articles/2018/11/k/ Citation: Zvezdin A K, Davydova M D, Zvezdin K A "Ultrafast spin dynamics and inverse spin Hall effect in nanostructures with giant spin-orbit coupling" Phys. Usp.61 1127–1136 (2018)