Atomistic simulations of long-range strain and spatial asymmetry effects in multimillion-atom single and double quantum dot nanostructures

  • Gerhard Klimeck
  • , Marek Korkusinski
  • , Xu Haiying
  • , Lee Seungwon
  • , Sebastien Goasguen
  • , Faisal Saied

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The Nanoelectronic Modeling Tool NEMO-3D is a simulator providing quantitative estimates for the strain distribution and the single-particle electronic structure of semiconductor nanodevices, such as self-assembled quantum dots, quantum wells and wires. Both strain and electronic structure are computed using semi-empirical nearest-neighbor tight-binding schemes implemented on the atomistic level. The software tool is parallelized using MPI, which makes it possible to treat multimillion-atom systems. This work reports on application of the NEMO-30 tool to single and coupled quantum dot nanostructures. The spatial extent and directionality of the strain field produced by a single In As quantum dot embedded in the GaAs barrier material is explored. In the multidot systems, the electron and hole states are computed as a function of the interdot distance for vertically coupled double-dot molecules.

Original languageEnglish
Title of host publication2005 International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2005
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages335-338
Number of pages4
ISBN (Print)4990276205, 9784990276201
DOIs
StatePublished - 2005
Event2005 International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2005 - Tokyo, Japan
Duration: Sep 1 2005Sep 3 2005

Publication series

NameInternational Conference on Simulation of Semiconductor Processes and Devices, SISPAD
Volume2005

Conference

Conference2005 International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2005
Country/TerritoryJapan
CityTokyo
Period09/1/0509/3/05

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