Polarization-induced switching effect in graphene nanoribbon edge-defect junction

Polarization-induced switching effect in graphene nanoribbon edge-defect junction.

With nonequilibrium Green's function approach combined with density functional theory, we perform an ab initio calculation to investigate transport properties of graphene nanoribbon (GNR) junctions self-consistently. Tight-binding approximation is applied to model the zigzag (ZGNR) electrodes, and its validity is confirmed in comparison to the GAUSSIAN03 periodic boundary condition calculation ...

Ballistic rectification in a Z-shaped graphene nanoribbon junction

Z. F. Wang, Qunxiang Li, Q. W. Shi, Xiaoping Wang, J. G. Hou, Huaixiu Zheng, and Jie Chen Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China Department of Electrical and Computer Engineering, University of Alberta, AB T6 G 2V4, Canada National Institute of Nanotechnology, Department of Ele...

Computational Model of Edge Effects in Graphene Nanoribbon Transistors

Address correspondence to guoj@ufl .edu ABSTRACT We present a semi-analytical model incorporating the effects of edge bond relaxation, the third nearest neighbor interactions, and edge scattering in graphene nanoribbon fi eld-effect transistors (GNRFETs) with armchair-edge GNR (AGNR) channels. Unlike carbon nanotubes (CNTs) which do not have edges, the existence of edges in the AGNRs has a sign...

Effect of Edge Roughness on Static Characteristics of Graphene Nanoribbon Field Effect Transistor

In this paper, we present a physics-based analytical model of GNR FET, which allows for the evaluation of GNR FET performance including the effects of line-edge roughness as its practical specific non-ideality. The line-edge roughness is modeled in edge-enhanced band-to-band-tunneling and localization regimes, and then verified for various roughness amplitudes. Corresponding to these two regime...

Electron spin magnetism of zigzag graphene nanoribbon edge states