Tunable Quantum Dot Arrays Formed from Self-Assembled Metal-Organic Networks
Tunable Quantum Dot Arrays Formed from Self-Assembled Metal-Organic Networks
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DOI：
10.1103/physrevlett.106.026802
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发表时间：
2011-01-13
影响因子：
8.6
通讯作者：
Barth, J. V.
中科院分区：
文献类型：
--
作者：
Klappenberger, F.;Kuehne, D.;Barth, J. V.
利用低温扫描隧道显微镜和光谱学以及电子结构计算研究了自组装纳米多孔金属有机网络对Ag（111）表面态电子的限制。蜂窝网络的钴金属中心和二腈-低聚苯基链接诱导表面共振状态限制在腔中具有可调的能级排列。我们发现，电子散射是排斥的分子和弱吸引力的合作。定制的网络代表周期性阵列的均匀和耦合的量子点。
The confinement of Ag(111) surface-state electrons by self-assembled, nanoporous metal-organic networks is studied using low-temperature scanning tunneling microscopy and spectroscopy as well as electronic structure calculations. The honeycomb networks of Co metal centers and dicarbonitrile-oligophenyl linkers induce surface resonance states confined in the cavities with a tunable energy level alignment. We find that electron scattering is repulsive on the molecules and weakly attractive on Co. The tailored networks represent periodic arrays of uniform and coupled quantum dots.