Pozner Roni, Lifshitz Efrat, Peskin Uri
†Schulich Faculty of Chemistry, ‡Solid State Institute, ¶Russell Berrie Nanotechnology Institute, and ∥Lise Meitner Center for Computational Quantum Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel.
J Phys Chem Lett. 2015 May 7;6(9):1521-8. doi: 10.1021/acs.jpclett.5b00434. Epub 2015 Apr 10.
Colloidal quantum dots are free-standing nanostructures with chemically tunable electronic properties. In this work, we consider a new STM tip-double quantum dot (DQD)-surface setup with a unique connectivity, in which the tip is coupled to a single dot and the coupling to the surface is shared by both dots. Our theoretical analysis reveals a unique negative differential resistance (NDR) effect attributed to destructive interference during charge transfer from the DQD to the surface. This NDR can be used as a sensitive probe for interdot interactions in DQD arrays.
胶体量子点是具有化学可调电子性质的独立纳米结构。在这项工作中，我们考虑一种具有独特连接性的新型扫描隧道显微镜（STM）针尖 - 双量子点（DQD） - 表面装置，其中针尖与单个量子点耦合，而与表面的耦合由两个量子点共享。我们的理论分析揭示了一种独特的负微分电阻（NDR）效应，该效应归因于电荷从双量子点转移到表面过程中的相消干涉。这种负微分电阻可用作双量子点阵列中量子点间相互作用的灵敏探针。
Zotero 插件