We study spin transport in a zigzag graphene nanoribbon sample with two ferromagnetic strips deposited on the two sides of the ribbon.A tight-binding Hamiltonian was adopted to describe the sample connected to two onedimensional leads.Our theoretical study shows that the resonance peaks of conductance for the spin-up and spin-down electrons are separated for the parallel configuration of the ferromagnetic strips,while they are not separated for the case of antiparallel configuration.This means that giant ma...
【英文摘要】
We study spin transport in a zigzag graphene nanoribbon sample with two ferromagnetic strips deposited on the two sides of the ribbon.A tight-binding Hamiltonian was adopted to describe the sample connected to two onedimensional leads.Our theoretical study shows that the resonance peaks of conductance for the spin-up and spin-down electrons are separated for the parallel configuration of the ferromagnetic strips,while they are not separated for the case of antiparallel configuration.This means that giant ma...
【基金】
Project supported by the National Natural Science Foundation of China(Grant No.11064010);
the Project of Qiannan Normal College for Nationalities,China(Grant No.QNSY201012)
【更新日期】
2012-04-23
【分类号】
TB383.1
【正文快照】
1.IntroductionThe discovery of giant magnetoresistance(GMR)in1988[1]has led to a rapid development in spin-tronics,which exploits the intrinsic spins of electronsin transport phenomena.Much attention has beenpaid to the study of spin-based devices recentl
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