title: Self-assembly of manganese phthalocyanine on Pb(111) surface: a scanning tunneling microscopy study.
abstract: The self-assembled structure of submonolayer manganese phthalocyanine (MnPc) on Pb(111) surface is investigated by using low-temperature scanning tunneling microscopy (STM). A "holelike" superlattice, which is superimposed on the self-assembled nearly quadratic network, is observed. High resolution STM images reveal that there are two distinct azimuthal orientations of MnPc molecules. It is found that by taking the two different orientations the self-assembly can further be optimized energetically by maximizing intermolecular orbital overlapping. It is this intralayer energy minimization process that leads to the characteristic holelike superlattice.
authors.affiliation: Department of Physics, Tsinghua University, Beijing, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Hao
authors.forename: Canli
authors.initials: C
authors.lastname: Song
authors.forename: Yanxiao
authors.initials: Y
authors.lastname: Ning
authors.forename: Yilin
authors.initials: Y
authors.lastname: Wang
authors.forename: Lili
authors.initials: L
authors.lastname: Wang
authors.forename: Xu-Cun
authors.initials: XC
authors.lastname: Ma
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.forename: Qi-Kun
authors.initials: QK
authors.lastname: Xue