Multilayer relaxation of clean Ag{001}

Abstract

A low-energy electron-diffraction intensity analysis of data from a clean Ag{001} surface finds no multilayer relaxation, i.e., with \ensuremath{\Delta}${\mathit{d}}_{\mathit{i}\mathit{k}}$ being the change in spacing between layer i and layer k, \ensuremath{\Delta}${\mathit{d}}_{12}$=0\ifmmode\pm\else\textpm\fi{}0.03 \AA{} and \ensuremath{\Delta}${\mathit{d}}_{23}$=0\ifmmode\pm\else\textpm\fi{}0.03 \AA{}. These results are compared with the results of first-principles total-energy calculations and with other recent relaxation determinations on fcc {001} surfaces.