Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany.
Center for Computational Materials Science, Naval Research Laboratory, Washington, DC 20375, USA.
Phys Rev Lett. 2015 Aug 14;115(7):076803. doi: 10.1103/PhysRevLett.115.076803.
Quantum-dot molecules were constructed on a semiconductor surface using atom manipulation by scanning tunneling microscopy (STM) at 5 K. The molecules consist of several coupled quantum dots, each of which comprises a chain of charged adatoms that electrostatically confines intrinsic surface-state electrons. The coupling takes place across tunnel barriers created reversibly using the STM tip. These barriers have an invariant, reproducible atomic structure and can be positioned-and repeatedly repositioned-to create a series of reconfigurable quantum-dot molecules with atomic precision.
使用扫描隧道显微镜（STM）在 5 K 下通过原子操纵在半导体表面上构建了量子点分子。这些分子由几个耦合的量子点组成，每个量子点由一串带电的 adatoms 组成，这些 adatoms 通过静电作用限制本征表面态电子。耦合发生在使用 STM 尖端可逆地创建的隧道势垒中。这些势垒具有不变的、可重复的原子结构，可以定位 - 并重复定位 - 以原子精度创建一系列可重新配置的量子点分子。
