Spin-filtering, giant magnetoresistance, rectifying and negative differential resistance effects in planar four-coordinate Fe complex with graphene nanoribbon electrodes

P Zhao; Q H Wu; D S Liu; G Chen

doi:10.1063/1.4862502

Spin-filtering, giant magnetoresistance, rectifying and negative differential resistance effects in planar four-coordinate Fe complex with graphene nanoribbon electrodes

J Chem Phys. 2014 Jan 28;140(4):044311. doi: 10.1063/1.4862502.

Authors

P Zhao¹, Q H Wu¹, D S Liu², G Chen¹

Affiliations

¹ School of Physics and Technology, University of Jinan, Jinan 250022, China.
² School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.

PMID: 25669527
DOI: 10.1063/1.4862502

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.