Observation of Extrinsic Photo-Induced Inverse Spin Hall Effect in a GaAs/AlGaAs Two-Dimensional Electron Gas
| Autor: | Xiaolin Zeng, Yu Liu, Shuying Cheng, Qiao Zheng, Lijia Xia, Wang Yumeng, Yunfeng Lai, Jinling Yu, Yonghai Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanochemistry Inverse 02 engineering and technology Photo-induced inverse spin Hall current 01 natural sciences Measure (mathematics) 0103 physical sciences lcsh:TA401-492 General Materials Science 010306 general physics Circular polarization Spin-½ Power dependence Condensed matter physics Nano Express Extrinsic mechanism Light profile dependence Inverse spin Hall effect 021001 nanoscience & nanotechnology Condensed Matter Physics Spin Hall effect lcsh:Materials of engineering and construction. Mechanics of materials Current (fluid) 0210 nano-technology Fermi gas |
| Zdroj: | Nanoscale Research Letters, Vol 13, Iss 1, Pp 1-9 (2018) Nanoscale Research Letters |
| ISSN: | 1931-7573 |
| DOI: | 10.1186/s11671-018-2715-y |
| Popis: | The inverse spin Hall effect induced by circularly polarized light has been observed in a GaAs/AlGaAs two-dimensional electron gas. The spin transverse force has been determined by fitting the photo-induced inverse spin Hall effect (PISHE) current to a theoretical model. The PISHE current is also measured at different light power and different light spot profiles, and all the measurement results are in good agreement with the theoretical calculations. We also measure the PISHE current at different temperatures (i.e., from 77 to 300 K). The temperature dependence of the PISHE current indicates that the extrinsic mechanism plays a dominant role, which is further confirmed by the weak dependence of the PISHE current on the crystal orientation of the sample. |
| Databáze: | OpenAIRE |
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