Nonlocal Signal and Noise in T -Shaped Lateral Spin-Valve Structures
| Autor: | A.V. Vedyayev, N. Ryzhanova, Nikita Strelkov, A.V. Lobachev, Timofey Andrianov, Bernard Dieny |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Condensed matter physics Spintronics Spin valve General Physics and Astronomy Thermal fluctuations 02 engineering and technology Spin current 021001 nanoscience & nanotechnology 01 natural sciences Signal Noise (electronics) Magnetic field 0103 physical sciences 010306 general physics 0210 nano-technology Spin-½ |
| Zdroj: | Physical Review Applied |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.10.064047 |
| Popis: | In spintronics, lateral spin valves enable the manipulation of pure spin current without charge current. These systems are very interesting, particularly as magnetic field sensors for $e.g.$ read heads in hard disk drives. This paper uses a two-dimensional diffusive model to investigate signal and noise in such T-shaped devices. Three sources of noise are discussed, one of which is associated with possible thermal fluctuations in spin accumulation. Though their signal-to-noise ratio still needs to be improved to make these devices suitable for hard disk drives, this study offers important physical insight to guide that quest. |
| Databáze: | OpenAIRE |
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