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Electrical characterization of all-optical helicity-dependent switching in ferromagnetic Hall crosses
- Source :
- Applied Physics Letters, Applied Physics Letters, American Institute of Physics, 2016, 108, pp.92405-153905. ⟨10.1063/1.4943107⟩
- Publication Year :
- 2016
- Publisher :
- AIP Publishing, 2016.
-
Abstract
- We present an experimental study of all-optical helicity-dependent switching (AO-HDS) of ferromagnetic Pt/Co/Pt heterostructures with perpendicular magnetic anisotropy. The sample is patterned into a Hall cross and the AO-HDS is measured via the anomalous Hall effect. This all-electrical probing of the magnetization during AO-HDS enables a statistical quantification of the switching ratio for different laser parameters, such as the threshold power to achieve AO-HDS and the exposure time needed to reach complete switching at a given laser power. We find that the AO-HDS is a cumulative process, a certain number of optical pulses is needed to obtain a full and reproducible helicity-dependent switching. The deterministic switching of the ferromagnetic Pt/Co/Pt Hall cross provides a full “opto-spintronic device,” where the remanent magnetization can be all-optically and reproducibly written and erased without the need of an external magnetic field.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
Condensed matter physics
Thermal Hall effect
02 engineering and technology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
01 natural sciences
Optical switch
Magnetic field
Magnetization
Ferromagnetism
Remanence
Hall effect
0103 physical sciences
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Laser power scaling
010306 general physics
0210 nano-technology
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 108
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi.dedup.....2a72ecebbc24e1e59349f8cb8603863f
- Full Text :
- https://doi.org/10.1063/1.4943107