EXPERIMENTAL-EVIDENCE FOR QUANTUM-SIZE EFFECTS IN ULTRATHIN METALLIC-FILMS

In recent years it has become clear that size quantization in ultrathin metallic films can influence many physical properties but most effects are rather weak. Due to short de Broglie wavelength of electrons at Fermi level most effects can be observed in extremely thin and smooth films. Recent achievements in technology of ultrathin metallic films allow to verify early theoretical predictions. Among them the measurements of specific resistivity and electron photoemission can be used as useful and sensitive tools. Clear QSE effects showed ultrathin layers of Pb, Pb-In alloy and In deposited on Si(111)-(6x6)Au substrate. Using Reflection High Energy Electron Diffraction (RHEED) technique the layered structure of ultrathin films was examined and correlated with QSE effects.In recent years it has become clear that size quantization in ultrathin metallic films can influence many physical properties but most effects are rather weak. Due to short de Broglie wavelength of electrons at Fermi level most effects can be observed in extremely thin and smooth films. Recent achievements in technology of ultrathin metallic films allow to verify early theoretical predictions. Among them the measurements of specific resistivity and electron photoemission can be used as useful and sensitive tools Clear QSE effects showed ultrathin layers of Pb, Pb-In alloy and In deposited on Si(111)-(6x6)Au substrate. Using Reflection High Energy Electron Diffraction (RHEED) technique the layered structure of ultrathin films was examined and correlated with QSE effects.