Quantum Chemical Calculations of Carbon Nanoscroll Energy Rolled from Zigzag Graphene Nanoribbon

Selective scattering in a zigzag graphene nanoribbon

Electric transport of a zigzag graphene nanoribbon through a step-like potential or a potential barrier is studied by using the recursive Green’s function method. The results for a step-like potential show that scattering processes in a zigzag graphene nanoribbon obey a following selection rule: when the number of zigzag chains N is even, electrons in the band m are only scattered into the band...

Electron spin magnetism of zigzag graphene nanoribbon edge states

Theoretical Study of a Zigzag Graphene Nanoribbon Field Effect Transistor

Graphene nanoribbons with zigzag edges show metallic behavior and are thus considered not appropriate for transistor applications. However, we show that by engineering line defects and using positive substrate impurities one can obtain a suitable effective transport gap at least for analog applications. The transfer and output characteristics of these structures are investigated employing quant...

Perfect Spin Filter in a Tailored Zigzag Graphene Nanoribbon

Zigzag graphene nanoribbons (ZGNRs) are expected to serve as the promising component in the all-carbon spintronic device. It remains challenging to fabricate a device based on ZGNRs with high spin-filter efficiency and low experimental complexity. Using density functional theory combined with nonequilibrium Green's function technique, we studied the spin-dependent transport properties of the ta...

Parity conservation in electron-phonon scattering in zigzag graphene nanoribbon

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