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Spin Hall effects in mesoscopic Pt films with high resistivity.
- Source :
-
Journal of Physics D: Applied Physics . 10/19/2016, Vol. 49 Issue 41, p1-1. 1p. - Publication Year :
- 2016
-
Abstract
- The energy efficiency of the spin Hall effects (SHE) can be enhanced if the electrical conductivity is decreased without sacrificing the spin Hall conductivity. The resistivity of Pt films can be increased to 150–300 µΩ · cm by mesoscopic lateral confinement, thereby decreasing the conductivity. The SHE and inverse spin Hall effects (ISHE) in these mesoscopic Pt films are explored at 10 K by using the nonlocal spin injection/detection method. All relevant physical quantities are determined in situ on the same substrate, and a quantitative approach is developed to characterize all processes effectively. Extensive measurements with various Pt thickness values reveal an upper limit for the Pt spin diffusion length: ⩽ 0.8 nm. The average product of and the Pt spin Hall angle is substantial: = (0.142 ± 0.040) nm for 4 nm thick Pt, though a gradual decrease is observed at larger Pt thickness. The results suggest enhanced spin Hall effects in resistive mesoscopic Pt films. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPIN Hall effect
*MESOSCOPIC systems
*PLATINUM
*ELECTRICAL resistivity
*SPIN valves
Subjects
Details
- Language :
- English
- ISSN :
- 00223727
- Volume :
- 49
- Issue :
- 41
- Database :
- Academic Search Index
- Journal :
- Journal of Physics D: Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 118220664
- Full Text :
- https://doi.org/10.1088/0022-3727/49/41/415002