Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 7: Magnetic Textures: Statics and Imaging I

MA 7.13: Vortrag

Montag, 1. April 2019, 18:30–18:45, H37

Electrically controllable magnetic switching and soliton motion in insulating magnetic garnets with perpendicular magnetic anisotropy — •Andrew Ross1,2, Shilei Ding1,2,3, Sven Becker1, Yuichiro Kurokawa1,4, Shruti Gupta2, Jinbo Yang3, Romain Lebrun1, Gerhard Jakob1,2, and Mathias Kläui1,2,51Johannes Gutenberg University, Mainz, Germany — 2Staudinger Weg 7 — 3Peking University, China — 4Kyushu University, Japan — 5QuSpin, Center for Quantum Spintronics, Norwegian University of Science and Technology, Norway

Insulating rare earth iron garnets (RIG), with low Gilbert damping, low pinning, and magnetic and angular momentum compensation points, show great promise for the field of spintronics[1]. Here we grow high quality TmIG (Tm3Fe5O12)films by pulsed laser deposition. Over a range of thicknesses, perpendicular magnetic anisotropy is observed, tailored by lattice strain between film and substrate. Utilizing the (inverse) spin Hall effect in a neighboring heavy metal layer, electrical detection and control of the magnetic state is successfully achieved for low current densities. We investigate the switching of TmIG films as a function of in-plane and out of plane magnetic fields, highlighting a thickness dependence to the efficiency of the interfacial spin orbit torques in such an insulating system. [1] C. O. Avci et al, Nature Materials, 16 (2017)

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