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Title: Emission properties of body-centered cubic elemental metal photocathodes

A first principles analysis of photoemission is developed to explain the lower than expected rms transverse electron momentum measured using the solenoid scan technique for the body-centered cubic Group Vb (V, Nb, and Ta) and Group VIb (Cr, Mo, and W) metallic photocathodes. The density functional theory based analysis elucidates the fundamental role that the electronic band structure (and its dispersion) plays in determining the emission properties of solid-state photocathodes and includes evaluation of work function anisotropy using a thin-slab method.
Authors:
; ;  [1]
  1. Department of Physics, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, Illinois 60607-7059 (United States)
Publication Date:
OSTI Identifier:
22399401
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; BCC LATTICES; CHROMIUM; DENSITY FUNCTIONAL METHOD; ELECTRONS; EVALUATION; MOLYBDENUM; NIOBIUM; PHOTOCATHODES; PHOTOEMISSION; SLABS; SOLENOIDS; SOLIDS; TANTALUM; TUNGSTEN; VANADIUM; WORK FUNCTIONS