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Singly ionized double-donor complex in vertically coupled quantum dots
Authors:Ramón Manjarres-García  Gene E Escorcia-Salas  Ilia D Mikhailov  José Sierra-Ortega
Affiliation:1.Group of Investigation in Condensed Matter Theory, Universidad del Magdalena, Santa Marta, Colombia;2.Universidad Industrial de Santander, A. A. 678, Bucaramanga, Colombia
Abstract:ABSTRACT: The electronic states of a singly ionized on-axis double-donor complex (D2+) confined in two identical vertically coupled, axially symmetrical quantum dots in a threading magnetic field are calculated. The solutions of the Schrodinger equation are obtained by a variational separation of variables in the adiabatic limit. Numerical results are shown for bonding and antibonding lowest-lying artificial molecule states corresponding to different quantum dot morphologies, dimensions, separation between them, thicknesses of the wetting layers, and magnetic field strength.
Keywords:Quantum dots   Adiabatic approximation   Artificial molecule   78.67.-n   78.67.Hc   3.21.-b
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