title: All-carbon sp-sp2 hybrid structures: geometrical properties, current rectification, and current amplification.
abstract: All-carbon sp-sp(2) hybrid structures comprised of a zigzag-edged trigonal graphene (ZTG)and carbon chains are proposed and constructed as nanojunctions. It has been found that such simple hybrid structures possess very intriguing propertiesapp:addword:intriguing. The high-performance rectifying behaviors similar to macroscopic p-n junction diodes, such as a nearly linear positive-bias I-V curve (metallic behavior), a very small leakage current under negative bias (insulating behavior), a rather low threshold voltage, and a large bias region contributed to a rectification, can be predicted. And also, a transistor can be built by such a hybrid structure, which can show an extremely high current amplification. This is because a sp-hybrid carbon chain has a special electronic structure which can limit the electronic resonant tunneling of the ZTG to a unique and favorable situation. These results suggest that these hybrid structures might promise importantly potential applications for developing nano-scale integrated circuits.
authors.affiliation: School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410114, China. lgzzhang@sohu.com
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Zhang
authors.forename: Junjun
authors.initials: J
authors.lastname: Zhang
authors.forename: Gordon
authors.initials: G
authors.lastname: Kwong
authors.forename: Ji
authors.initials: J
authors.lastname: Li
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Fan
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Deng
authors.forename: Guiping
authors.initials: G
authors.lastname: Tang