Peculiar transport properties in Z-shaped graphene nanoribbons: A nanoscale NOR gate

• Published in: Thin solid films Vol. 548; pp. 443 - 448
• Main Authors: Khoeini, Farhad, Khoeini, Farzad, Shokri, Aliasghar
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 02.12.2013; Elsevier
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Electrical properties of specific thin films; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport; Electronics; Exact sciences and technology; Fullerenes and related materials; diamonds, graphite; Green's function; Materials science; Molecular electronics, nanoelectronics; Nanoscale materials and structures: fabrication and characterization; Other topics in nanoscale materials and structures; Physics; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Single layer graphene; Specific materials; Tight-binding; Single layer graphene; Green's function; Electronic transport; Tight-binding; Magnetic flux; Transport properties; Nanotape; Nanostructures; Green function; Sandwich structures; Nanoelectronics; Nanometer scale; Graphene; Logic gates; Green's function methods; IV characteristic; Gates
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2013.09.072

A nanoscale logic NOR gate has been theoretically designed by magnetic flux inputs in a Z-shaped graphene nanoribbon composed of an armchair ribbon device sandwiched between two semi-infinite metallic zigzag ribbon leads. The calculations are based on the tight-binding model and iterative Green's function method, in which the conductance as well as current–voltage characteristics of the nanosystem are calculated, numerically. We show that the current and conductance are highly sensitive to both the magnetic fluxes subject to the device and the size of the system. Our results may have important applications for building blocks in the nanoelectronic devices based on graphene nanoribbons. •We theoretically design a nanoscale logical NOR gate using the magnetic flux inputs.•We show that the current and conductance of the system are highly sensitive to the magnetic fields and the size of the system.•The NOR gate response is independent of the length of the device.