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首页> 外文期刊>Physical review >Reactive rearrangements of step atoms by adsorption and asymmetric electronic statesof tetrafluoro-tetracyanoquinodimethane on Cu(100)
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Reactive rearrangements of step atoms by adsorption and asymmetric electronic statesof tetrafluoro-tetracyanoquinodimethane on Cu(100)

机译:四氟-四氰基喹二甲烷在Cu(100)上的吸附和不对称电子态对阶跃原子的反应性重排

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摘要

We investigated the local adsorption structure and electronic states of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) on Cu(100) at low coverage using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). F4-TCNQ molecules, which are preferentially adsorbed at a lower step edge, induce the reactive rearrangements of Cu atoms, including the formation of periodic kinks and step etching. The cyano groups of F4-TCNQ adsorbed at the step edge interact with not only the Cu(100) terrace but also Cu atoms at an upper step edge. This extra interaction results in the asymmetric electronic states in F4-TCNQ species, which are evidenced by STM and STS.
机译:我们使用扫描隧道显微镜(STM)和扫描电镜研究了低覆盖率下Cu(100)上2,3,5,6-四氟-7,7,8,8-四氰基喹二甲烷(F4-TCNQ)的局部吸附结构和电子态扫描隧道光谱(STS)。优先吸附在较低台阶边缘的F4-TCNQ分子引起Cu原子的反应性重排,包括周期性扭结和台阶蚀刻。吸附在台阶边缘的F4-TCNQ的氰基不仅与Cu(100)平台相互作用,而且还与台阶上部的Cu原子相互作用。这种额外的相互作用导致F4-TCNQ物种中的不对称电子态,这由STM和STS证明。

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