Modeling of the Mn-Carrier Exchange Interaction in Colloidal CdSe/CdMnS Nanoplatelets with a Multilayer Core and Magnetically Doped Shell

ORAL

Abstract

A Colloidal Nanoplatelet is a two-dimensional semiconductor nanocrystal heterostructure that allows for wavefunction engineering by controlling their composition and or thickness. With the inclusion of a shell doped with magnetic ions around a non-magnetic core, there exists a carrier mediated exchange interaction between the excitonic spin density and the Mn spins. Through the exchange interaction, magnetic effects such as Zeeman splitting and the excitonic photoluminescence circular polarization can be controlled by varying the shell thickness and or Mn content [1,2]. The previous works did not take into account on how the exitonic wavefunction is affected by the addition of the magnetically doped shell. Here, we present a model that includes the carrier mediated exchange interaction and study its effect on the excitonic wavefunction. [1] S. Delikanl et al.,ACS. Nano 2015 9, 12, 12473-12479 [2] F. Muckel et al., Nano Lett. 2018, 18, 2047−2053.

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Presenters

  • James Pientka

    • Department of Physics, St. Bonaventure University, St. Bonaventure, New York
    • St Bonaventure Univ

Authors

  • James Pientka

    • Department of Physics, St. Bonaventure University, St. Bonaventure, New York
    • St Bonaventure Univ

  • Arman Najafi

    • Department of Physics, State University of New York at Buffalo, Buffalo, New York
    • Physics, State Univ of NY - Buffalo, Buffalo, New York

  • Steven Tarasek

    • Department of Physics, State University of New York at Buffalo, Buffalo, New York

  • Savas Delikanli

    • Department of Electrical and Electronics Engineering, Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Turkey

  • Peiyao Zhang

    • Department of Physics, State University of New York at Buffalo, Buffalo, New York

  • Tenzin Norden

    • Department of Physics, State University of New York at Buffalo, Buffalo, New York

  • Sushant Shendre

    • LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore

  • Manoj Sharma

    • LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore

  • Arinjoy Bhattacharya

    • Department of Physics, State University of New York at Buffalo, Buffalo, New York
    • Physics, State Univ of NY - Buffalo, Buffalo, New York

  • Nima Taghipour

    • Department of Electrical and Electronics Engineering, Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Turkey

  • Hilmi Volkan Demir

    • LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore

  • Athos Petrou

    • Department of Physics, State University of New York at Buffalo, Buffalo, New York
    • Physics, State Univ of NY - Buffalo, Buffalo, New York

  • Tim Thomay

    • Department of Physics, State University of New York at Buffalo, Buffalo, New York