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Detection of interfacial spin accumulation induced by anomalous Hall effect in ferromagnets
- Source :
- Journal of Magnetism and Magnetic Materials. 477:209-213
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- We present an experimental observation of interfacial spin accumulation induced by anomalous Hall effect (AHE) in ferromagnets (FMs) in a multilayer structure of FM/YIG/Pt, where the direction of charge current injection in FM layer is perpendicular to the direction of voltage detection in Pt layer. In this structure, the magnon-mediated drag voltage (Vdrag) due to the interfacial spin accumulation induced by AHE, can be unambiguously separated from spin Seebeck voltage (VSSE) by sweeping or rotating the applied magnetic field. Field-dependent spin accumulation induced by AHE has been observed by comparison of nonlocal voltages between Ni/Cu/YIG/Pt and Pt/YIG/Pt samples. Furthermore, we demonstrate that the AHE voltage strongly depends on the spin polarization of conductivity and spin Hall angles of electrons with opposite spins in FMs. Our results show a prospect for FMs to be field-control spin generators via AHE, and provide a new viewpoint to realize the AHE.
- Subjects :
- 010302 applied physics
Materials science
Spins
Spin polarization
Condensed matter physics
02 engineering and technology
Electron
Conductivity
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Electronic, Optical and Magnetic Materials
Magnetic field
Condensed Matter::Materials Science
Ferromagnetism
Hall effect
0103 physical sciences
Condensed Matter::Strongly Correlated Electrons
0210 nano-technology
Spin-½
Subjects
Details
- ISSN :
- 03048853
- Volume :
- 477
- Database :
- OpenAIRE
- Journal :
- Journal of Magnetism and Magnetic Materials
- Accession number :
- edsair.doi...........5230c4488af7babd2b339dd880940cd3