2012/03/05 by E. Zipper, Elzbieta Zipper, Marcin Kurpas +2
Engineering · Physics and Astronomy · #Condensed matter physics #Controllability #Function (biology) #Materials science #Molecular Junctions and Nanostructures #Nanostructure #Nanotechnology #Physics #Quantum #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Qubit #Semiconductor Quantum Structures and Devices #Wave function #cond-mat.mes-hall
paper · pdf · doi:10.1088/1367-2630/14/9/093029
published as New J. Phys. 14, 093029 (2012) · 8 pages, 10 figures, 2 tables, revtex
arxiv created 2012/03/05 · openalex publication_date 2012/09/17 · arxiv updated 2012/09/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Modern nanotechnology allows the production of, depending on the application, various quantum nanostructures with selected properties. These properties are strongly influenced by the confinement potential which can be modified e.g. by electrical gating. In this paper, we analyze a nanostructure composed of a quantum dot surrounded by a quantum ring. We show that, depending on the details of the confining potential, the electron wave functions can be located in different parts of the structure. Since many properties of such a nanostructure strongly depend on the distribution of the wave functions, by varying the applied gate voltage one can easily control them. In particular, we illustrate the high controllability of the nanostructure by demonstrating how its coherent, optical and conducting properties can be drastically changed by a small modification of the confining potential.