Search for: [Abstrakt = "The electronic band structure of extremely thin \(from 1 to 8 monoatomic layer \(ML\) thick\) epitaxial Pb\(111\) films grown at low temperatures in ultrahigh vacuum \(UHV\) condition on Si\(111\)\-\(6×6\)Au substrate is studied with angle\-resolved photoelectron spectroscopy \(ARPES\). The morphology of the Pb film is determined with scanning tunneling microscopy \(STM\). Normal\-emission photoelectron spectra recorded at the sample temperature of 130 K reveal quantum well states \(QWS\) characteristic of quantization perpendicular to the film surface. The energies of these states as a function of the number of the Pb\(111\) monoatomic layers are determined and compared with calculated in terms of the Bohr–Sommerfeld phase accumulation model."]