Figure 1

(a) Calculated QWS energies (lines with dots) for 14ML-Pb/Cu(111) as a function of the electric field in the STM junction. The left (right) axis: the energy with respect to the $E_F$ ($E_V$). Dashed horizontal lines: experimental data of [1]. (b) Bulk Pb band dispersion along $\Gamma –L$ derived from experimental QWS energies (with respect to $E_F$). Results are compared with free-electron dispersion from the present 1D model and with ab initio calculations [9] (shifted by $+0.4\mathrm{eV}$ to coincide with photoemission data in 10).Reuse & Permissions