title: Reconfigurable Quantum-Dot Molecules Created by Atom Manipulation.
abstract: 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.
authors: Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany.
authors: Yi
authors: Y
authors: Pan
authors: Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany.
authors: Jianshu
authors: J
authors: Yang
authors: Center for Computational Materials Science, Naval Research Laboratory, Washington, DC 20375, USA.
authors: Steven C
authors: SC
authors: Erwin
authors: NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
authors: Kiyoshi
authors: K
authors: Kanisawa
authors: Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany.
authors: Stefan
authors: S
authors: Fölsch