title: Adsorption of PTCDA on Si(001) - 2 × 1 surface.
abstract: Adsorption structures of the 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) molecule on the clean Si(001) - 2 × 1 surface were investigated using scanning tunneling microscopy (STM) experiments in conjunction with first principles theoretical calculations. Four dominant adsorption structures were observed in the STM experiments and their atomic coordinates on the Si(001) surface were determined by comparison between the experimental STM images and the theoretical simulations. Maximizing the number of the Si-O bonds is more crucial than that of the Si-C bonds in the PTCDA adsorption.
authors.affiliation: Department of Electronics Engineering and Computer Science, Fukuoka University, Fukuoka 814-0180, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Suzuki
authors.affiliation: Department of Applied Mathematics and Physics, Tottori University, Tottori 680-8552, Japan.
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Yoshimoto
authors.affiliation: Department of Electronics Engineering and Computer Science, Fukuoka University, Fukuoka 814-0180, Japan.
authors.forename: Kazuma
authors.initials: K
authors.lastname: Yagyu
authors.affiliation: Department of Electronics Engineering and Computer Science, Fukuoka University, Fukuoka 814-0180, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tochihara