naa a22 4500 510800432 CHVBK 20180411083352.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11664-012-2243-y doi (NATIONALLICENCE)springer-10.1007/s11664-012-2243-y Quantum Transport Properties of Graphene Nanoribbons with Defects and Dephasing Scattering Processes [Elektronische Daten] [Guo-Ya Sun, Yue-jin Zhu] By applying the nonequilibrium Green function method, we have theoretically investigated the quantum transport properties of armchair and zigzag graphene nanoribbons (GNRs), with defects (vacancies) appearing at the edges or in the inner part. Effects of the defects on the electronic conductance and local density of states are comprehensively studied. It is found that both edge and inner defects reduce the electronic conductance in general, while in detail they have different effects on the transport properties for different combinations of defect location and GNR edge type. Under the same theoretical framework, we have also studied the effects of dephasing scattering processes in the GNRs, employing two specific choices of self-energy that provide momentum-conserving or momentum-relaxing dephasing processes. The momentum-relaxing dephasing processes not only relax momentum but also add an additional resistance to the channel, while the momentum- conserving dephasing processes only break the phase and have much less effect on the resistance. It is found that the transport properties of metallic zigzag GNRs are much more strongly modified by the dephasing scattering processes than are those of semiconducting armchair GNRs. TMS, 2012 Graphene nanoribbons nationallicence quantum transport nationallicence defects nationallicence dephasing scattering nationallicence Sun Guo-Ya Department of Physics, Institute of Theoretical Physics and Astrophysics, Xiamen University, 361005, Xiamen, China aut Zhu Yue-jin Department of Physics, Ningbo University, 315211, Ningbo, China aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/1(2013-01-01), 1-9 0361-5235 42:1<1 2013 42 11664 https://doi.org/10.1007/s11664-012-2243-y text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2243-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Guo-Ya Department of Physics, Institute of Theoretical Physics and Astrophysics, Xiamen University, 361005, Xiamen, China aut NATIONALLICENCE 700 1- Zhu Yue-jin Department of Physics, Ningbo University, 315211, Ningbo, China aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/1(2013-01-01), 1-9 0361-5235 42:1<1 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer