Inhibited single-electron transfer by electronic band gap of two-dimensional Au quantum dot superlattice
Inhibited single-electron transfer by electronic band gap of two-dimensional Au quantum dot superlattice
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DOI：
10.1063/1.3489436
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发表时间：
2010-09
影响因子：
4
通讯作者：
Rui Xu;Yi Sun;Jiyong Yang;Lin He;J. Nie;Lingling Li;Yadong Li
中科院分区：
文献类型：
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作者：
Rui Xu;Yi Sun;Jiyong Yang;Lin He;J. Nie;Lingling Li;Yadong Li
利用低温扫描隧道显微镜和扫描隧道光谱研究了二维Au量子点超晶格的电子态密度。二维Au超晶格在其电子态密度中打开了一个缺口。单个Au量子点的单电子转移可以被这种“人工”禁带有效地抑制。这一发现开辟了一条基于二维金属量子点超晶格调制固体电子能带的途径，这可能会为未来可能的电子器件产生具有电子特性的材料。
The electronic density of states of two-dimensional (2D) Au quantum dot superlattice are explored by using cryogenic scanning tunneling microscopy and scanning tunneling spectroscopy. The 2D Au superlattice opens up a gap in its electronic density of states. The single-electron transfer of a single Au quantum dot can be effectively inhibited by this “artificial” forbidden gap. This finding opens a route toward modulating electronic energy band of solid on the basis of 2D metal quantum dot superlattice, which may generate materials with electronic properties for possible future electronic devices.