Abbreviated Journal Title
Phys. Rev. B
Keywords
SCANNING-TUNNELING-MICROSCOPY; DENSITY-FUNCTIONAL THEORY; ADSORPTION; CU(111); PENTACENE; BENZENE; STRESS; GROWTH; Physics, Condensed Matter
Abstract
Adsorbing anthracene on a Cu(111) surface results in a wide range of complex and intriguing superstructures spanning a coverage range from 1 per 17 to 1 per 15 substrate atoms. In accompanying first-principles density-functional theory calculations we show the essential role of van der Waals interactions in estimating the variation in anthracene adsorption energy and height across the sample. We can thereby evaluate the compression of the anthracene film in terms of continuum elastic properties, which results in an effective Young's modulus of 1.5 GPa and a Poisson ratio approximate to 0.1. These values suggest interpretation of the molecular monolayer as a porous material-in marked congruence with our microscopic observations.
Journal Title
Physical Review B
Volume
82
Issue/Number
20
Publication Date
1-1-2010
Document Type
Article
Language
English
First Page
4
WOS Identifier
ISSN
1098-0121
Recommended Citation
Sun, Dezheng; Kim, Dae-Ho; Le, Duy; Borck, Øyvind; Berland, Kristian; Kim, Kwangmoo; Lu, Wenhao; Zhu, Yeming; Luo, Miaomiao; Wyrick, Jonathan; Cheng, Zhihai; Einstein, T. L.; Rahman, Talat S.; Hyldgaard, Per; and Bartels, Ludwig, "Effective elastic properties of a van der Waals molecular monolayer at a metal surface" (2010). Faculty Bibliography 2010s. 845.
https://stars.library.ucf.edu/facultybib2010/845
Comments
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