Spin transport parameters in Ni80 Fe20/ Ru and Ni80 Fe20/ Ta bilayers
We present a systematic study of the spin transport properties in two different bilayer systems, Ni80Fe20/Ru and Ni80Fe20/Ta, combining ferromagnetic resonance (FMR) and inverse spin Hall effect (ISHE) voltage measurements. We have estimated the effective spin mixing conductance g↑↓ by analyzing the...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/180616 |
| Acceso en línea: | http://hdl.handle.net/11336/180616 |
| Access Level: | acceso abierto |
| Palabra clave: | INVERSE SIN HALL EFFECT FERROMAGNETIC RESONANCE PERMALLOY SPN HALL ANGLE https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Sumario: | We present a systematic study of the spin transport properties in two different bilayer systems, Ni80Fe20/Ru and Ni80Fe20/Ta, combining ferromagnetic resonance (FMR) and inverse spin Hall effect (ISHE) voltage measurements. We have estimated the effective spin mixing conductance g↑↓ by analyzing the permalloy (Py) thickness dependence of the FMR linewidth obtaining g↑↓=(3.8±0.7)×1015cm-2 and g↑↓=(1.3±0.4)×1015cm-2 for Py/Ru and Py/Ta, respectively. Analyzing the Ta thickness dependence of the ISHE voltage, we have been able to extract the spin diffusion length, λSD=1.5±0.5 nm, and spin Hall angle, ΘSH=-0.03±0.01, of Ta. From the two series of Py/Ta bilayers - with thickness variation of ferromagnetic and nonmagnetic layers, respectively - we demonstrate a path to estimate the spin diffusion length from the experimental data, independent of the spin Hall angle and the microwave field amplitude. |
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