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Direct conversion of light-polarization information into electric voltage using photoinduced inverse spin-Hall effect in Pt/GaAs hybrid structure: Spin photodetector
- Source :
- Journal of Applied Physics, J.Appl.Phys.
- Publication Year :
- 2010
- Publisher :
- AIP Publishing, 2010.
-
Abstract
- The direct conversion of light-polarization information into electric voltage has been demonstrated using the photoinduced inverse spin-Hall effect in a Pt/GaAs hybrid structure. In the GaAs layer, spin-polarized carriers are generated by the illumination of circularly polarized light, which induces a pure-spin current in the Pt layer through the interface. The pure-spin current is converted into an electromotive force using the inverse spin-Hall effect (ISHE) in the Pt layer. The electromotive force due to the photoinduced ISHE was found to be proportional to the degree of circular polarization of the illuminated light outside the sample in spite of the presence of the Pt top layer, which is consistent with a calculation based on the analysis for light propagation in multilayer structures. This conversion of light-polarization information into electric voltage works at room temperature without bias voltage and magnetic fields, and thus can be used as a spin photodetector. © 2010 American Institute of Physics. 107 11 Cited By :11
- Subjects :
- Photo-induced
Materials science
Degree of circular polarization
Direct conversion
Spin currents
General Physics and Astronomy
Photodetector
Spin Hall effect
Gyrators
Spin dynamics
Multilayer structures
Optoelectronic devices
Polarization
Light propagation
Circular polarization
Platinum
Room temperature
Electric voltage
Electromotive force
business.industry
GaAs
Photodetectors
Hall effect
Biasing
Circularly polarized light
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Magnetic field
Magnetic field effects
Hybrid structure
Optoelectronics
Electric potential
business
Spin-polarized carriers
Voltage
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 107
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi.dedup.....dbd9a026d7c14997987c4e74c704969a