Perylene monolayer on the Ru(0001) surface

Lu, B.; Zhang, H. J.; Tao, Y. S.; Huang, H.; Li, H. Y.; Bao, S. N.; He, P.; Chen, Q.
February 2005
Applied Physics Letters;2/7/2005, Vol. 86 Issue 6, p061915
Academic Journal
The growth of epitaxial monolayer of perylene on Ru(0001) was investigated by means of scanning tunneling microscopy (STM). The STM images showed a coexistence of the ordered phase with a 12×12 superstructure and the disordered phase in a monolayer of perylene on Ru(0001). In the disordered region, the perylene molecules are randomly distributed, and orientated uniformly with their long axis in the [1000] direction. For the ordered phase, a model of the Ru(0001)-(12×12)-8 perylene superstructure was proposed. The results indicate that the growth behavior of perylene on Ru(0001) is mainly controlled by laterally repulsive molecule-molecule interaction.


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