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Terahertz spectroscopy for all-optical spintronic characterization of the spin-Hall-effect metals Pt, W and Cu80Ir20
- Source :
- Journal of Physics D, Journal of Physics D: Applied Physics, Journal of Physics D: Applied Physics, IOP Publishing, 2018, 51 (36), pp.364003. ⟨10.1088/1361-6463/aad536⟩, Journal of Physics D: Applied Physics, 51 (36)
- Publication Year :
- 2018
-
Abstract
- Identifying materials with an efficient spin-to-charge conversion is crucial for future spintronic applications. In this respect, the spin Hall effect is a central mechanism as it allows for the interconversion of spin and charge currents. Spintronic material research aims at maximizing its efficiency, quantified by the spin Hall angle and the spin-current relaxation length . We develop an all-optical contact-free method with large sample throughput that allows us to extract and . Employing terahertz spectroscopy and an analytical model, magnetic metallic heterostructures involving Pt, W and Cu80Ir20 are characterized in terms of their optical and spintronic properties. The validity of our analytical model is confirmed by the good agreement with literature DC values. For the samples considered here, we find indications that the interface plays a minor role for the spin-current transmission. Our findings establish terahertz emission spectroscopy as a reliable tool complementing the spintronics workbench.<br />Journal of Physics D: Applied Physics, 51 (36)<br />ISSN:0022-3727<br />ISSN:1361-6463
- Subjects :
- Materials science
Acoustics and Ultrasonics
530 Physics
terahertz emission spectroscopy
FOS: Physical sciences
02 engineering and technology
01 natural sciences
Transition metal
Hall effect
0103 physical sciences
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
ultrafast spincaloritronics
010306 general physics
Spectroscopy
ComputingMilieux_MISCELLANEOUS
terahertz transmission spectroscopy
ultrafast spintronics
Condensed Matter - Materials Science
Spintronics
Condensed Matter - Mesoscale and Nanoscale Physics
business.industry
Relaxation (NMR)
Refractory metals
Materials Science (cond-mat.mtrl-sci)
021001 nanoscience & nanotechnology
Condensed Matter Physics
530 Physik
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
3. Good health
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Terahertz spectroscopy and technology
Spin Hall effect
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Optoelectronics
0210 nano-technology
business
Subjects
Details
- Language :
- English
- ISSN :
- 00223727, 13616463, 13672630, and 00344885
- Database :
- OpenAIRE
- Journal :
- Journal of Physics D, Journal of Physics D: Applied Physics, Journal of Physics D: Applied Physics, IOP Publishing, 2018, 51 (36), pp.364003. ⟨10.1088/1361-6463/aad536⟩, Journal of Physics D: Applied Physics, 51 (36)
- Accession number :
- edsair.doi.dedup.....c53bd881252cae732281460f60179ec7