Carrier Localization by a Quantum Dot in a Quantum Well

A.N. Kosarev and V.V. Chaldyshev
Phys. Rev. Applied 16, 044046 – Published 25 October 2021

Abstract

We show that a self-organized quantum dot (QD) embedded in a quantum well (QW) can provide better carrier localization compared to the bare QD due to a complex action of three processes, namely, an increase in the QD volume, a change of the QD aspect ratio, and strain redistribution provided by the QW. For an InAs QD and an (In,Ga)As QW, we calculate the possible energy benefits of these three contributions and examine the optimal dot-in-well configuration sustaining the interface coherency.

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  • Received 21 July 2021
  • Accepted 8 October 2021

DOI:https://doi.org/10.1103/PhysRevApplied.16.044046

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

A.N. Kosarev1,2,* and V.V. Chaldyshev1,†

  • 1Ioffe Institute, 26 Politekhnicheskaya str., Saint Petersburg 194021, Russia
  • 2Peter the Great Saint Petersburg Polytechnic University, 29 Politekhnicheskaya str., Saint Petersburg 195251, Russia

  • *kosarev@mail.ioffe.ru
  • chald.gvg@mail.ioffe.ru

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Vol. 16, Iss. 4 — October 2021

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