Scanning Tunneling Microscopy and Spectroscopy of Phthalocyanine Molecules on Metal Surfaces
Scanning Tunneling Microscopy and Spectroscopy of Phthalocyanine Molecules on Metal Surfaces
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DOI：
10.1143/jjap.44.5332
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发表时间：
2005-07
影响因子：
1.5
通讯作者：
M. Takada;H. Tada
中科院分区：
文献类型：
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作者：
M. Takada;H. Tada
用扫描隧道显微镜和光谱研究了5 K时酞菁钴（CoPc）分子在Au（111）和Cu（100）表面的电子结构.在微分电导（dI/dV）谱中，有一些峰与Co原子的最高占据轨道（HOMO）、最低未占据轨道（LUMO）和d轨道有关。Cu（100）表面上的CoPc分子在HOMO和LUMO相关峰之间有新的电子态，而Au（111）表面上的CoPc分子没有显示额外的峰。dI/dV图像表明，新的态是由分子的LUMO和Cu（100）表面的电子态之间的杂化产生的。
We studied the electronic structure of cobalt-phthalocyanine (CoPc) molecules on Au(111) and Cu(100) surfaces by scanning tunneling microscopy and spectroscopy at 5 K. In the differential conductance (dI/dV) spectra, there were some peaks related to the highest occupied molecular orbital (HOMO), the lowest unoccupied MO (LUMO) and the d-orbitals of the Co atom. CoPc molecules on the Cu(100) surface had new electronic states between the peaks related to HOMO and LUMO, while those on the Au(111) surface did not show additional peaks. A dI/dV image indicated that the new states were generated by the hybridization between the LUMO of molecules and the electronic states of the Cu(100) surface.