title: Quantitative Understanding of van der Waals Interactions by Analyzing the Adsorption Structure and Low-Frequency Vibrational Modes of Single Benzene Molecules on Silver.
abstract: The combination of a sub-Kelvin scanning tunneling microscope and density functional calculations incorporating van der Waals (vdW) corrections has been used successfully to probe the adsorption structure and low-frequency vibrational modes of single benzene molecules on Ag(110). The inclusion of optimized vdW functionals and improved C6-based vdW dispersion schemes in density functional theory is crucial for obtaining the correct adsorption structure and low-energy vibrational modes. These results demonstrate the emerging capability to quantitatively probe the van der Waals interactions between a physisorbed molecule and an inert substrate.
authors.affiliation: Center for High Resolution Electron Microscopy, College of Materials Science and Engineering, Hunan University , Changsha 410082, China.|Department of Physics and Astronomy, University of California , Irvine, California 92697-4575, United States.
authors.forename: Dingwang
authors.initials: D
authors.lastname: Yuan
authors.affiliation: Department of Physics and Astronomy, University of California , Irvine, California 92697-4575, United States.
authors.forename: Zhumin
authors.initials: Z
authors.lastname: Han
authors.affiliation: Department of Physics and Astronomy, University of California , Irvine, California 92697-4575, United States.
authors.forename: Gregory
authors.initials: G
authors.lastname: Czap
authors.affiliation: Department of Physics and Astronomy, University of California , Irvine, California 92697-4575, United States.
authors.forename: Chi-Lun
authors.initials: CL
authors.lastname: Chiang
authors.affiliation: Department of Physics and Astronomy, University of California , Irvine, California 92697-4575, United States.
authors.forename: Chen
authors.initials: C
authors.lastname: Xu
authors.affiliation: Department of Physics and Astronomy, University of California , Irvine, California 92697-4575, United States.|Department of Chemistry, University of California , Irvine, California 92697-2025, United States.
authors.forename: W
authors.initials: W
authors.lastname: Ho
authors.affiliation: Department of Physics and Astronomy, University of California , Irvine, California 92697-4575, United States.
authors.forename: Ruqian
authors.initials: R
authors.lastname: Wu