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, the local total current density J(x, y) rescaled by F 2 to allow for a direct comparison with FN plots

, Squares: FN plot for the local current density J(x = 0.5, y = 0.5) (W location), from DFT calculations. Triangles: FN plot for the local current density J(x = 0, y = 0) (C location), from DFT calculations. Circles: FN plot for the averaged current density, from DFT calculations. Also shown are the FN plots for the Fowler-Nordheim models obtained with the work functions 4.23 eV (dashed line) and 4.79 eV (dashed-dotted line). These values are those of the local work functions for the W and C locations, respectively, FIG. 5: Fowler-Nordheim plots for local and averaged current densities in the 1ML case

, 3) for spherical harmonics with z components (p z , d z 2 , d xz , d yz ), centered on the topmost tungsten atom and truncated to be confined inside a sphere of radius 1.455Å. Results for d xz and d yz are degenerate. Bottom: state current density J m as a function of the energy of the state m, Top: Projected local density of states, vol.20, p.40

. V/nm,

, A frame has been added (second from the top) to show projected local density of states associated to the adsorbed C atom, Same as fig. 7, but for the 1ML case