Chemical Research Support department, Weizmann Institute of Science, Rehovot, 76100, Israel.
The Institute of Nanotechnology and Advanced Materials, The Department of Physics, Bar Ilan University, Ramat Gan, 52900, Israel.
Nat Commun. 2017 Sep 1;8(1):402. doi: 10.1038/s41467-017-00442-6.
A single-electron transistor is a nano-device with large potential for low-power applications that can be used as logic elements in integrated circuits. In this device, the conductance oscillates with a well-defined period due to the Coulomb blockade effect. By using a unique technique, we explore single-electron transistors based on a single metallic nanoparticle with tunable coupling to electric leads. We demonstrate a unique regime in which the transistor is characterized by multi-periodic oscillations of the conductance with gate voltage where the additional periods are harmonics of the basic periodicity of the Coulomb blockade and their relative strength can be controllably tuned. These harmonics correspond to a charge change on the dot by a fraction of the electron charge. The presence of multiple harmonics makes these transistors potential elements in future miniaturization of nano-sized circuit elements.Single-electron transistors are elements for nanoscale electronics. Employing single-electron transistors based on gold nanoparticles, Bitton et al., report a fabrication technique that allows precise control over the coupling between a nanodot and leads, resulting in new transport characteristics.
单电子晶体管是一种具有很大潜力的纳米器件，可用于低功耗应用，可作为集成电路中的逻辑元件。在该器件中，由于库仑阻塞效应，电导随明确的周期振荡。通过使用独特的技术，我们探索了基于单个金属纳米粒子的单电子晶体管，其与电引线的耦合是可调谐的。我们证明了一个独特的状态，其中晶体管的特点是电导随栅极电压的多周期振荡，其中附加周期是库仑阻塞的基本周期性的谐波，其相对强度可以可控地调谐。这些谐波对应于在点上的电荷变化为电子电荷的分数。多个谐波的存在使这些晶体管成为未来纳米尺寸电路元件小型化的潜在元件。单电子晶体管是纳米电子学的元件。Bitton 等人采用基于金纳米粒子的单电子晶体管，报告了一种制造技术，该技术允许对纳米点与引线之间的耦合进行精确控制，从而产生新的传输特性。
