This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.81.035423 in citations.
Please use the identifier: http://hdl.handle.net/2128/10982 in citations.
Repulsion between molecules on a metal: Monolayers and submonolayers of hexa-peri-hexabenzocoronene on Au(111)
Repulsion between molecules on a metal: Monolayers and submonolayers of hexa-peri-hexabenzocoronene on Au(111)
We investigate the growth of hexa-peri-hexabenzocoronene (HBC) on Au(111) for monolayer (ML) and sub-ML coverage by scanning tunneling microscopy and low-energy electron diffraction. A transition from a disordered isotropic phase at low coverage to a highly ordered phase with a coverage-dependent la...
Saved in:
Personal Name(s): | Wagner, C. |
---|---|
Kasemann, D. / Golnik, C. / Forker, R. / Esselinger, M. / Müllen, K. / Fritz, T. | |
Contributing Institute: |
Grenz- und Oberflächen; IBN-3 JARA-FIT; JARA-FIT |
Published in: | Physical Review B Physical review / B, 81 81 (2010 2010) 3 3, S. 035423 035423 |
Imprint: |
College Park, Md.
APS
2010
|
Physical Description: |
035423 |
DOI: |
10.1103/PhysRevB.81.035423 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Physical Review B
81 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/10982 in citations.
We investigate the growth of hexa-peri-hexabenzocoronene (HBC) on Au(111) for monolayer (ML) and sub-ML coverage by scanning tunneling microscopy and low-energy electron diffraction. A transition from a disordered isotropic phase at low coverage to a highly ordered phase with a coverage-dependent lattice constant at higher coverage is found and attributed to a repulsive intermolecular force. To deduce the origin of this repulsion a model is set up, containing the Coulomb interaction between molecules and between localized dipoles from the push-back effect, as well as the intermolecular van der Waals potential. The modeling of the van der Waals interaction is done on a force field level. We find that the observed repulsion can only be explained when assuming a certain screening of the attractive London forces by the presence of the metal substrate. |