title: Electronic structures of one-dimensional metal-molecule hybrid chains studied using scanning tunneling microscopy and density functional theory.
abstract: The electronic structures of self-assembled hybrid chains comprising Ag atoms and organic molecules were studied using scanning tunneling microscopy (STM) and spectroscopy (STS) in parallel with density functional theory (DFT). Hybrid chains were prepared by catalytic breaking of Br-C bonds in 4,4″-dibromo-p-terphenyl molecules, followed by spontaneous formation of Ag-C bonds on Ag(111). An atomic model was proposed for the observed hybrid chain structures. Four electronic states were resolved using STS measurements, and strong energy dependence was observed in STM images. These results were explained using first-principles calculations based on DFT.
authors.affiliation: Department of Physics, Korea University, Seoul, Korea.
authors.forename: Kyung-Hoon
authors.initials: KH
authors.lastname: Chung
authors.forename: Bon-Gil
authors.initials: BG
authors.lastname: Koo
authors.forename: Howon
authors.initials: H
authors.lastname: Kim
authors.forename: Jong Keon
authors.initials: JK
authors.lastname: Yoon
authors.forename: Ji-Hoon
authors.initials: JH
authors.lastname: Kim
authors.forename: Young-Kyun
authors.initials: YK
authors.lastname: Kwon
authors.forename: Se-Jong
authors.initials: SJ
authors.lastname: Kahng