title: Spin-filtering, giant magnetoresistance, rectifying and negative differential resistance effects in planar four-coordinate Fe complex with graphene nanoribbon electrodes.
abstract: By using the nonequilibrium Green's function formalism combined with the density functional theory, we have investigated the spin-polarized transport properties of a planar four-coordinate Fe complex sandwiched between two zigzag-edge graphene nanoribbon (ZGNR) electrodes, where the ZGNRs are modulated by external magnetic field. The results show that the system can exhibit perfect dual spin-filtering and spin-rectifying effects at a wide bias range, giant magnetoresistance effect with large magnetoresistance ratio at small bias, and obvious negative differential resistance behavior. The mechanisms are proposed for these phenomena.
authors: School of Physics and Technology, University of Jinan, Jinan 250022, China.
authors: P
authors: P
authors: Zhao
authors: School of Physics and Technology, University of Jinan, Jinan 250022, China.
authors: Q H
authors: QH
authors: Wu
authors: School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
authors: D S
authors: DS
authors: Liu
authors: School of Physics and Technology, University of Jinan, Jinan 250022, China.
authors: G
authors: G
authors: Chen