Review on spintronics: Principles and device applications ...
2020-9-1u2002·u2002In order to improve the spin injection efficiency into graphene, a high quality Al 2 O 3 tunnelling barrier has been introduced on the epitaxial graphene grown on SiC in the local spin-valve . The corresponding GMR ratio is reported to be 9.4% at 1.4 K and the spin diffusion length is found to be over 100 µm, confirming the strong advantage of ...
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