Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.186102
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Funding
- European Research Council (ERC-StG) [278698 PRECISE-NANO]
- Academy of Finland (Centre of Excellence in Low Temperature Quantum Phenomena and Devices) [250280]
- Netherlands Organization for Scientific Research (NWO-ECHO-STIP) [717.013.003]
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Intermolecular features in atomic force microscopy images of organic molecules have been ascribed to intermolecular bonds. A recent theoretical study [P. Hapala et al., Phys. Rev. B 90, 085421 ( 2014)] showed that these features can also be explained by the flexibility of molecule-terminated tips. We probe this effect by carrying out atomic force microscopy experiments on a model system that contains regions where intermolecular bonds should and should not exist between close-by molecules. Intermolecular features are observed in both regions, demonstrating that intermolecular contrast cannot be directly interpreted as intermolecular bonds.
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