Abstract
We report on the electrical injection and detection of spin accumulation in trilayer-graphene/MgO/Permalloy lateral spin-valve (LSV) structure. Non-local spin valve signal is clearly observed in the LSV, indicating that spin coherence extends underneath all ferromagnetic contacts. We also show that low-resistivity graphene/MgO/Py junctions enable efficient spin injection and detection in LSV with high applied current density, which leads to large spin accumulation of 120 μV at room temperature. A spin diffusion length of 1.5 μm was obtained for the injector-detector separation dependence of spin valve signal measurements carried out at room temperature, while at T = 10 K, the diffusion length increases to 2.3 μm.
Original language | English |
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Article number | 033105 |
Journal | Applied Physics Letters |
Volume | 102 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2013 Jan 21 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)