title: Implementation of Outstanding Electronic Transport in Polar Covalent Boron Nitride Atomic Chains: another Extraordinary Odd-Even Behaviour.
abstract: A theoretical investigation of the unique electronic transport properties of the junctions composed of boron nitride atomic chains bridging symmetric graphene electrodes with point-contacts is executed through non-equilibrium Green's function technique in combination with density functional theory. Compared with carbon atomic chains, the boron nitride atomic chains have an alternative arrangement of polar covalent B-N bonds and different contacts coupling electrodes, showing some unusual properties in functional atomic electronic devices. Remarkably, they have an extraordinary odd-even behavior of conductivity with the length increase. The rectification character and negative differential resistance of nonlinear current-voltage characteristics can be achieved by manipulating the type of contacts between boron nitride atomic chains bridges and electrodes. The junctions with asymmetric contacts have an intrinsic rectification, caused by stronger coupling in the C-N contact than the C-B contact. On the other hand, for symmetric contact junctions, it is confirmed that the transport properties of the junctions primarily depend on the nature of contacts. The junctions with symmetric C-N contacts have higher conductivity than their C-B contacts counterparts. Furthermore, the negative differential resistances of the junctions with only C-N contacts is very conspicuous and can be achieved at lower bias.
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Xu
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Weiqi
authors.initials: W
authors.lastname: Li
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin, 150001, P. R. China.|School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Linhua
authors.initials: L
authors.lastname: Liu
authors.affiliation: Institute of Theoretical Chemistry and College of Chemistry, Jilin University, Changchun, 130023, P. R. China.
authors.forename: Jikang
authors.initials: J
authors.lastname: Feng
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Yongyuan
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: College of Chemistry and Chemical Engineering, Chongqing University, Huxi Campus, Chongqing, 401331, P. R. China.
authors.forename: Wei Quan
authors.initials: WQ
authors.lastname: Tian