Spin Hall magnetoresistance in a canted ferrimagnet

Spin Hall magnetoresistance in a canted ferrimagnet

Ganzhorn, Kathrin (Technische Universität München; Bayerische Akademie der Wissenschaften)
Barker, Joseph (Tohoku University)
Schlitz, Richard (Technische Universität München; Bayerische Akademie der Wissenschaften)
Piot, Benjamin A. (Université Grenoble Alpes)
Ollefs, Katharina (Universität Duisburg-Essen; European Synchrotron Radiation Facility (ESRF))
Guillou, F. (European Synchrotron Radiation Facility (ESRF))
Wilhelm, Fabrice (European Synchrotron Radiation Facility (ESRF))
Rogalev, Andrei (European Synchrotron Radiation Facility (ESRF))
Bauer, G.E. (TU Delft QN/Bauer Group; Tohoku University; Kavli institute of nanoscience Delft)

2016-09-01

We study the spin Hall magnetoresistance effect in ferrimagnet/normal metal bilayers, comparing the response in collinear and canted magnetic phases. In the collinear magnetic phase, in which the sublattice magnetic moments are all aligned along the same axis, we observe the conventional spin Hall magnetoresistance. In contrast, in the canted phase, the magnetoresistance changes sign. Using atomistic spin simulations and x-ray absorption experiments, we can understand these observations in terms of the magnetic field and temperature dependent orientation of magnetic moments on different magnetic sublattices. This enables a magnetotransport based investigation of noncollinear magnetic textures.

http://resolver.tudelft.nl/uuid:14e1043c-a780-4526-b692-a871460ba122

https://doi.org/10.1103/PhysRevB.94.094401

1098-0121

Physical Review B (Condensed Matter and Materials Physics), 94 (9), 1-6

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journal article

© 2016 Kathrin Ganzhorn, Joseph Barker, Richard Schlitz, Benjamin A. Piot, Katharina Ollefs, F. Guillou, Fabrice Wilhelm, Andrei Rogalev, G.E. Bauer, More Authors