23 research outputs found
Spin injection properties in trilayer graphene lateral spin valves
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.Published versio