Effective elastic properties of a van der Waals molecular monolayer at a metal surface
Journal article, 2010

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.

adsorption

Dept Phys

Sweden.

2

College Pk

SE-41296 Gothenburg

scanning-tunneling-microscopy

density-functional theory

stress

MD

Kwangmoo

Einstein

T. L.] Univ Maryland

pentacene

benzene

[Kim

cu(111)

growth

Author

D. Z. Sun

D. H. Kim

D. Le

O. Borck

Kristian Berland

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

K. Kim

W. H. Lu

Y. M. Zhu

M. M. Luo

J. Wyrick

Z. H. Cheng

T. L. Einstein

T. S. Rahman

Per Hyldgaard

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

L. Bartels

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 82 20

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Materials Science

Subject Categories

Physical Sciences

Atom and Molecular Physics and Optics

Condensed Matter Physics

Roots

Basic sciences

DOI

10.1103/PhysRevB.82.201410

More information

Created

10/7/2017