Equally Spaced Quantum States in van der Waals Epitaxy-Grown Nanoislands
Equally Spaced Quantum States in van der Waals Epitaxy-Grown Nanoislands
Pursuing the confinement of linearly dispersive relativistic Fermions is of interest in both fundamental physics and potential applications. Here, we report strong STM evidence for the equally spaced, strikingly sharp, and densely distributed quantum well states (QWSs) near Fermi energy in Pb(111) nanoislands, van der Waals epitaxially grown on graphitized …