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

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:
; ;  [1] ;  [2] ;  [3]
  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)
  3. (China)
Publication Date:
OSTI Identifier:
22255224
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 140; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DENSITY FUNCTIONAL METHOD; GRAPHENE; GREEN FUNCTION; IRON COMPLEXES; MAGNETIC FIELDS; MAGNETORESISTANCE; NANOSTRUCTURES; SPIN; SPIN ORIENTATION