科研之友
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摘要
The S(110)-(16x2) surface has a complex reconstruction containing alternating up and down atomic steps with a periodicity of 5 nm. By studying the electronic states around the step edges with scanning tunnel microscope (STM), and by adsorption of water molecules, we are able to propose a model of the step structure. It requires the removal of seven atoms from the stepped (1x1) surface, and simulated STM images from density functional theory are in excellent agreement with experiment. We also found that water forms a perfectly ordered array on the upper terrace of the stepped reconstruction.
- 出版日期2010-9-10
