Nucleation and submonolayer growth of C60 on KBr -: art. no. 096102

被引:92
作者
Burke, SA [1 ]
Mativetsky, JM [1 ]
Hoffmann, R [1 ]
Grütter, P [1 ]
机构
[1] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
关键词
D O I
10.1103/PhysRevLett.94.096102
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Noncontact atomic force microscopy has been applied to the prototypical molecule-insulator system C-60 on KBr to study nucleation and submonolayer growth. Overview images reveal an island growth mode with unusual branching structures. Simultaneous molecular and atomic resolution on the C-60 and KBr surfaces, respectively, was obtained revealing a coincident 8x3 superstructure. Also, a 21 +/- 3 pm apparent height difference was observed in atomic force microscopy topographies between some first layer molecules. One of the initial nucleation sites of the C-60 islands was determined by observation of loosely bound molecules at kink sites in monatomic KBr steps, in conjunction with the observation that islands form preferentially at step edges.
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页数:4
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