Author/Authors :
Xu، نويسنده , , Chengyong and Li، نويسنده , , Linze and Li، نويسنده , , Hong W. Qin، نويسنده , , Rui and Zheng، نويسنده , , Jiaxin and Luo، نويسنده , , Guangfu and Liu، نويسنده , , Qihang and Yan، نويسنده , , Xin and Yu، نويسنده , , Lili and Lu، نويسنده , , Jing and Gao، نويسنده , , Zhengxiang، نويسنده ,
Abstract :
Sign-changeable spin-filter efficiency is predicted in both the ferromagnetic and antiferromagnetic configurations of a zigzag graphene nanoribbon bridging two half-planar graphene electrodes from ab initio quantum transport calculations. By changing edge spin-polarization configuration, we obtain giant room-temperature magnetoresistance, which is one order of magnitude larger than the maximum experimental results.
Keywords :
Graphene nanoribbon , Spin-filter efficiency , magnetoresistance , Quantum transport calculation
