Scanning tunneling microscope studies of monolayer films of C60 sublimed onto Au ( 111 ) facets reveal a new Au reconstruction at the C60-Au ( 111 ) interface after annealing to a temperature of 700 K. C60 forms two well-ordered hexagonal phases upon which is superimposed a striped texturing with a long-range height modulation of ≈ 1 Å. and a periodicity of 90–160 Å. This texturing is shown to arise from a modification of the reconstruction of clean Au ( 111 ) present at the C60-Au interface. The observations indicate that the C60-Au interaction reduces energetic factors favoring compression of the first Au layer resulting in a substantial increase in the unit cell of the Au reconstruction along 〈110〉 directions. This decompression of the first Au layer also favors the formation of a commensurate C60 layer.

Observation of a new Au ( 111 ) reconstruction at the interface of an adsorbed C60 overlayer

MODESTI, SILVIO;
1993-01-01

Abstract

Scanning tunneling microscope studies of monolayer films of C60 sublimed onto Au ( 111 ) facets reveal a new Au reconstruction at the C60-Au ( 111 ) interface after annealing to a temperature of 700 K. C60 forms two well-ordered hexagonal phases upon which is superimposed a striped texturing with a long-range height modulation of ≈ 1 Å. and a periodicity of 90–160 Å. This texturing is shown to arise from a modification of the reconstruction of clean Au ( 111 ) present at the C60-Au interface. The observations indicate that the C60-Au interaction reduces energetic factors favoring compression of the first Au layer resulting in a substantial increase in the unit cell of the Au reconstruction along 〈110〉 directions. This decompression of the first Au layer also favors the formation of a commensurate C60 layer.
1993
http://dx.doi.org/10.1016/0009-2614(93)85153-F
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2560281
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