Loading...
Please wait, while we are loading the content...
Diffusivity control in molecule-on-metal systems using electric fields.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jiang, Ning Zhang, Youtian Liu, Qihang Cheng, Zhi Hai Deng, Zi Tong Du, Shao Fei Gao, H-J Beck, Matthew Jon Pantelides, Sokrates T. |
| Copyright Year | 2009 |
| Abstract | The development of methods for controlling the motion and arrangement of molecules adsorbed on a metal surface would provide a powerful tool for the design of molecular electronic devices. Recently, metal phthalocyanines (MPc) have been extensively considered for use in such devices. Here we show that applied electric fields can be used to turn off the diffusivity of iron phthalocyanine (FePc) on Au(111) at fixed temperature, demonstrating a practical and direct method for controlling and potentially patterning FePc layers. Using scanning tunneling microscopy, we show that the diffusivity of FePc on Au(111) is a strong function of temperature and that applied electric fields can be used to retard or enhance molecular diffusion at fixed temperature. Using spin-dependent density-functional calculations, we then explore the origin of this effect, showing that applied fields modify both the molecule-surface binding energies and the molecular diffusion barriers through an interaction with the dipolar Fe-Au adsorption bond. On the basis of these results FePc on Au(111) is a promising candidate system for the development of adaptive molecular device structures. |
| Starting Page | 33 |
| Ending Page | 41 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://nano.iphy.ac.cn/N04-en/papers/NO4_papers%20all%20pdf/HJ_Gao.1005.pdf |
| PubMed reference number | 20178372v1 |
| Alternate Webpage(s) | https://doi.org/10.1021/nl903473p |
| DOI | 10.1021/nl903473p |
| Journal | Nano letters |
| Volume Number | 10 |
| Issue Number | 4 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Direct Method Electroconvulsive Therapy Energy, Physics Microscopy, Scanning Tunneling anatomical layer electric field iron phthalocyanine sequestering of metal ion |
| Content Type | Text |
| Resource Type | Article |
