Tunneling magnetoresistance based on a Cr/graphene/Cr magnetotunnel junction*
Luan Gui-Pinga), Zhang Pei-Rana), Jiao Naa), Sun Li-Zhongb)
       
(a) Top view of the graphene/Cr(111) planar junction (the large spheres represent the Cr atoms and the small spheres represent the C atoms). (b) Side view of the Cr/graphene/Cr junction; the nearest C–Cr distance is 2.22 Å after optimization. (c) Two-probe system of Cr/graphene/Cr; the blue and black represent the Cr and C atoms, respectively.