SINGLE-MONOLAYER ORDERED PHASES OF C-60 MOLECULES ON SI(111)-(7X7) SURFACES

被引：57

作者：

CHEN, D

CHEN, J

SARID, D

机构：

[1] Optical Sciences Center, University of Arizona, Tucson

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.50.10905

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on ultrahigh-vacuum scanning tunneling microscopy of submonolayers of C-60 molecules adsorbed on a Si(111)-(7X7) surface and the statistics of their bonding sites. The images reveal that as the submonolayer coverage increases, the adsorbate-adsorbate interaction becomes larger than that of the adsorbate-substrate interaction. For a full monolayer coverage of adsorbates, the adsorbate-adsorbate interaction becomes strong enough and they form two ordered structural phases registered with those pinned on the substrate corner holes. This result is in contrast to a previous report [Phys. Rev. Lett. 70, 1850 (1993)] stating that several monolayers of adsorbates are required for the formation of the ordered structural phases.

引用

页码：10905 / 10909

页数：5

共 12 条

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