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PhD Defense: Magneto-optical characterization of magnetic thin films and interface structures

Monday, July 15, 2019 - 11:30
Place: 
CFM Auditorium
Who: 
Patricia Riego Saavedra
Source Name: 
nanoGUNE

Utilizing the magneto-optical Kerr effect (MOKE) as a main characterization technique different phenomena in spintronics and magnetism are studied. First, the possibility to detect the spin Hall effect in non-ferromagnetic metals by means of MOKE is explored. Second, the effect of a Ru overcoat onto the magnetic behavior of a thin uniaxial Co ferromagnetic film is investigated. An unexpected out-of-plane magnetization component whose size depends on the Ru thickness is observed and its origin is explained based on a spin model that includes Dzyaloshinskii-Moriya interaction. Finally, the effect of a field that oscillates at periods comparable to the characteristic time in which the magnetization of the system is reversed is studied in uniaxial ferromagnets, where a dynamic phase transition arises upon changing the period of the oscillating field. 
Supervisors: A. Berger / J.M. Pitarke

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