Anomalous Quantum-Confined Stark Effects in Stacked [Formula presented] Self-Assembled Quantum Dots

Weidong Sheng, Jean Pierre Leburton

Research output: Contribution to journalArticlepeer-review

Abstract

Vertically stacked and coupled [Formula presented] self-assembled quantum dots (SADs) are predicted to exhibit strong hole localization even with vanishing separation between the dots, and a nonparabolic dependence of the interband transition energy on the electric field, which is not encountered in single SAD structures. Our study based on an eight-band strain-dependent [Formula presented] Hamiltonian indicates that this anomalous quantum confined Stark effect is caused by the three-dimensional strain field distribution which influences drastically the hole states in the stacked SAD structures.

Original languageEnglish (US)
Number of pages1
JournalPhysical review letters
Volume88
Issue number16
DOIs
StatePublished - Jan 1 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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