Modeling artificial molecules composed of coupled quantum dots

Richard Akis, Dragica Vasileska

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recently, there has been much interest in coupled quantum dots. With individual dots, if the energy levels can be resolved, then one can think of a dot as representing an "artificial atom" [1]. Thus, fabricating multiple quantum dots by using a split metal gate pattern over a GaAs-AlGaAs heterostructure, and allowing the dots to couple via quantum point contacts (QPCs), provides a way of creating "artificial molecules≤[2]. Modeling such structures using a finite difference approach, we obtain the self-consistent confining potentials that are used in a 2-dimensional Schrödinger solver. The eigenstates of the resulting coupled systems show hybridization effects analogous to that of true molecules. Moreover, many of the eigenstates of these systems show evidence of wave function scarring, a phenomenon where the probability amplitude of the eigenstate is maximized along the path of a classical trajectory.

Original languageEnglish (US)
Title of host publication2000 International Conference on Modeling and Simulation of Microsystems - MSM 2000
EditorsM. Laudon, B. Romanowicz
Pages441-444
Number of pages4
StatePublished - Dec 1 2000
Event2000 International Conference on Modeling and Simulation of Microsystems - MSM 2000 - San Diego, CA, United States
Duration: Mar 27 2000Mar 29 2000

Publication series

Name2000 International Conference on Modeling and Simulation of Microsystems - MSM 2000

Other

Other2000 International Conference on Modeling and Simulation of Microsystems - MSM 2000
CountryUnited States
CitySan Diego, CA
Period3/27/003/29/00

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Keywords

  • Chaos
  • Heterostructures
  • Mesoscopic
  • Periodic orbits
  • Quantum dots

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Akis, R., & Vasileska, D. (2000). Modeling artificial molecules composed of coupled quantum dots. In M. Laudon, & B. Romanowicz (Eds.), 2000 International Conference on Modeling and Simulation of Microsystems - MSM 2000 (pp. 441-444). (2000 International Conference on Modeling and Simulation of Microsystems - MSM 2000).