Abstract
We study the field-emission properties of an ultrathin silver nanowire using first-principlesmethods. The simulation and analysis of the field emission are carried out based ondensity-functional theory using a localized basis scheme. Through the explicit timeevolution of wavefunctions, we obtain the emission currents and spatial distributions ofemitted electrons from a silver nanowire. In contrast to carbon nanotubes, the localizedstates are not found. Instead, pronounced emission currents are observed for s-like extendedstates that are free of nodes in a plane normal to the field direction, and the total emissioncurrents of a silver nanowire are found to be significantly larger than those ofcarbon nanotubes. A quantum-mechanical analysis is presented to explain theobserved current enhancement. On the other hand, an ultrathin gold nanowire givesmuch smaller emission currents than the silver nanowire due to a larger workfunction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
