ANOMALOUS WORK FUNCTION OF THE TUNGSTEN (110) PLANE

Publisher Website
Google Scholar
Abstract
Work functionmeasurements have been carried out on the densely packed (110) plane of tungsten. Field‐ion microscope techniques have been used to obtain atomically perfect single‐crystal (110) planes. Field‐electron emission energy distributions have been combined with Fowler‐Nordheim measurements to give work function values at 77°K. The electrostatic patch fields which exist at the measured surface result in corrections which tend to increase the work function value. The measurements reported here are not corrected for patch fields and range in value from 7.1 eV to 8.7 eV for the (110) plane. Future measurements will employ a newly developed technique involving a family of energy distribution plots which eliminates the correction for patch fields.