▎ 摘　　要

Spin-dependent electronic transport properties of Fe-terminated zig-zag graphene nanoribbons (zGNRs) have been studied using first-principles transport simulations. The spin configuration of proposed zGNRs junction can be controlled with external magnetic field, and the tunneling junction show magnetoresistance > 1000 at small bias and is a perfect spin-filter by applying uniform external magnetic filed at small bias. (C) 2011 American Institute of Physics. [doi:10.1063/1.3626596]