Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3646406
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Funding
- NSFC [10834011, 60976089]
- MOST of China [2009CB929103, 2010CB923004, 2011CB932700]
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Using epitaxially grown graphene on Ru(0001) as a buffer layer, the intrinsic molecular orbitals of perylene-3,4,9,10-tetracarboxylic dianhydride, pentacene, and C-60 molecules were imaged by means of scanning tunneling microscope (STM). Combined with density functional theory calculations, our high resolution STM images of the molecules reveal that the graphene layer decouples the individual molecules electronically from the metallic substrate. Our results show that graphene-based moireacute pattern can be used as a unique way to probe the intrinsic electronic structures of molecular adsorbates and their interactions. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3646406]
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