Parity conservation in electron-phonon scattering in zigzag graphene nanoribbon
نویسندگان
چکیده
Articles you may be interested in Quantum conductance of zigzag graphene oxide nanoribbons Chiral graphene nanoribbons: Objective molecular dynamics simulations and phase-transition modeling Phonon limited transport in graphene nanoribbon field effect transistors using full three dimensional quantum mechanical simulation
منابع مشابه
Engineering enhanced thermoelectric properties in zigzag graphene nanoribbons
We theoretically investigate the thermoelectric properties of zigzag graphene nanoribbons in the presence of extended line defects, substrate impurities, and edge roughness along the nanoribbon’s length. A nearest-neighbor tight-binding model for the electronic structure and a fourth nearest-neighbor force constant model for the phonon bandstructure are used. For transport, we employ quantum me...
متن کاملSelective 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...
متن کاملElectronic Behavior of Doped Graphene Nanoribbon Device: NEGF+DFT
Quantum transport properties of pure and functioned infinite lead-connection region-lead systembased on the zigzag graphene nanoribbon (2-zGNR) have been investigated. In this work the effectof the doping functionalization on the quantum transport of the 2-zGNR has been computationallystudied. Also, the effect of the imposed gate voltages (-3.0, 0.0 and +3.0 V) and bias voltages 0.0 to2.0 V hav...
متن کاملUnimpeded tunneling in graphene nanoribbons.
We studied the Klein paradox in zigzag (ZNR) and anti-zigzag (AZNR) graphene nanoribbons. Due to the fact that ZNR (the number of lattice sites across the nanoribbon = N is even) and AZNR (N is odd) configurations are indistinguishable when treated by the Dirac equation, we supplemented the model with a pseudo-parity operator whose eigenvalues correctly depend on the sublattice wavefunctions fo...
متن کاملTailoring the transmission lineshape spectrum of zigzag graphene nanoribbon based heterojunctions via controlling their width and edge protrusions.
We report a first-principles analysis of electron transport through narrow zigzag graphene nanoribbon (up to 2.2 nm) based wedge-shaped heterojunctions. We show that the width difference between the electrode and the scattering region and the edge protrusion of heterojunctions can be tuned to endow the system's transmission spectrum with distinctive features. In particular, transport through ju...
متن کامل