▎ 摘　　要

NOVELTY - Graphene belt based spin valve contains edged carbon atoms as graphene nanometer belt spin transport channel. USE - Graphene belt based spin valve. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene belt based spin valve, which involves: (A) cleaning doped silicon substrate; (B) applying silicon dioxide layer on the silicon substrate, which is transferred on graphene; (C) obtaining a layer of photoresist mask plate by etching graphene using electron beam photo-etching; (D) hydrogenating the edge of carbon atoms using hydrogen plasma etching; (E) obtaining a second layer of photoresist mask plate using electron beam photo-etching; (F) etching the graphene and carbon edge i.e. bonded with oxygen using oxygen plasma etching; and (G) hydrogenating carbon atoms using magnetic electrode.