title: Melting of two-dimensional adatom superlattices stabilized by long-range electronic interactions.
abstract: The melting transition of Ce adatom superlattices stabilized by long-range substrate-mediated electronic interactions on Cu(111) and Ag(111) noble metal surfaces has been investigated by low-temperature scanning tunneling microscopy, density functional theory calculations, and kinetic Monte Carlo simulations. Intriguingly, owing to the interaction between Ce adatoms and substrate, these superlattices undergo two-dimensional melting to a liquid without transition through the hexatic phase. The crucial parameters for this direct solid to liquid transition are identified.
authors: Fachbereich Physik, Martin-Luther-Universität, Halle-Wittenberg, D-06099 Halle, Germany.
authors: N N
authors: NN
authors: Negulyaev
authors: V S
authors: VS
authors: Stepanyuk
authors: L
authors: L
authors: Niebergall
authors: P
authors: P
authors: Bruno
authors: M
authors: M
authors: Pivetta
authors: M
authors: M
authors: Ternes
authors: F
authors: F
authors: Patthey
authors: W-D
authors: WD
authors: Schneider