Numerical study of localization length in disordered graphene nanoribbons |
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Authors: | AA Shokri F Khoeini |
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Institution: | 1. Department of Physics, Payame Noor University (PNU), P.O. Box 19395-3697, Tehran, Iran;2. Computational Physical Sciences Research Laboratory, School of Nano-Science, Institute for Research in Fundamental Science (IPM), P.O. Box 19395-5531, Tehran, Iran |
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Abstract: | In this work, we study quantum transport properties of a defective graphene nanoribbon (DGNR) attached to two semi-infinite metallic armchair graphene nanoribbon (AGNR) leads. A line of defects is considered in the GNR device with different configurations, which affects on the energy spectrum of the system. The calculations are based on the tight-binding model and Green’s function method, in which localization length of the system is investigated, numerically. By controlling disorder concentration, the extended states can be separated from the localized states in the system. Our results may have important applications for building blocks in the nano-electronic devices based on GNRs. |
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Keywords: | Graphene nanoribbon Defects Ballistic transport Quantum localization |
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