▎ 摘　　要

A magnetic tunnel junction consisting of a boron nitride nanoribbon contacted by two semi-infinite electrodes composed of (3,0) ferromagnetic zig-zag graphene nanoribbons was investigated. Performing spin-polarized ab initio transport calculations based on a scheme that combines non-equilibrium Green's function with density functional theory (NEGF-FDFT) we predict that such system could act as spin-filter (the efficiency reaches 50%) and present a magnetoristance of 10(5)%, depending on the length of the boron nitride region. (C) 2013 Elsevier Ltd. All rights reserved.