An Impurity Effect for the Rates of the Interparticle Coulombic Decay

Authors

  • Vladislav Guskov Section de Mathematiques, Universite de Geneve, CH-1211, Geneva 4, Switzerland
  • Fabian Langkabel Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 10409 Berlin, Germany
  • Matthias Berg Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 10409 Berlin, Germany
  • Annika Bande Helmholtz-Zentrum Berlin für Materialien und Energie GmbH

DOI:

https://doi.org/10.34019/2674-9688.2020.v3.31928

Keywords:

interparticle Coulombic decay, quantum dot, electron dynamics, butterfly effect

Abstract

The interparticle Coulombic decay is a synchronized decay and ionization phenomenon occurring on two separated and only Coulomb interaction coupled electron binding sites. This publication explores how drastically small environmental changes in between the two sites, basically impurities, can alter the ionization properties and process rate, although the involved electronic transitions remain unaltered. A comparison among the present electron dynamics calculations for the example of different types of quantum dots, accommodating a one- or a two-dimensional continuum for the outgoing electron, and the well-investigated atomic and molecular cases with three-dimensional continuum, reveals that the impurity effect is most pronounced the stronger that electron is confined. This necessarily leads to challenges and opportunities in a quantum dot experiment to prove the interparticle Coulombic decay.

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Published

2020-11-28