Abstract
In this work, nanojunctions consisting of two combined similar right triangle graphenes (SRTGs) bonded covalently with zigzag-edged graphene nanoribbon electrodes are designed, and their electron transport properties are investigated using density functional theory and non-equilibrium Green's function method. Results reveal that the SRTG-based devices exhibit an interesting negative differential resistance (NDR) effect and present a rule indicating that the NDR effect increases with the increasing sizes of both SRTGs. The electron transport properties are further tested using two combined SRTGs with different sizes. Overall, this study suggests that the SRTG-based structures are promising candidates in the design of nanoscale NDR devices.
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