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Virtual Photon Approximation for Three-Body Interatomic Coulombic Decay.

Robert Bennett1,2, Petra Votavová3, Přemysl Kolorenč3

  • 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany.

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This summary is machine-generated.

Interatomic Coulombic decay (ICD) is an energy transfer mechanism. A third atom can significantly alter ICD rates at both short and long distances by mediating virtual photon exchange.

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Area of Science:

  • Atomic and Molecular Physics
  • Quantum Chemistry
  • Chemical Physics

Background:

  • Interatomic Coulombic decay (ICD) facilitates rapid energy exchange between microscopic entities.
  • At large distances, energy transfer occurs via virtual photon exchange between donor and acceptor species.
  • Previous studies indicated that a third species enhances ICD at short distances due to wave function overlap and charge transfer states.

Purpose of the Study:

  • To develop a theoretical framework for three-body ICD incorporating retardation effects.
  • To investigate the influence of a passive third species on ICD rates at various interatomic distances.
  • To explore geometrical effects on ICD in the presence of a mediator atom.

Main Methods:

  • Development of a virtual photon description for three-body ICD.
  • Theoretical modeling to include retardation and geometrical dependencies.
  • Analysis of effects beyond the reach of current ab initio calculations.

Main Results:

  • A passive atom significantly influences ICD rates even at large interatomic distances.
  • The scattering of virtual photons off a mediator atom affects the ICD process.
  • In the retarded regime, the position of the passive object can substantially enhance or suppress ICD.

Conclusions:

  • The virtual photon model provides new insights into three-body ICD dynamics.
  • Mediator atoms play a crucial role in controlling ICD rates, particularly at larger distances and in the retarded regime.
  • Geometrical arrangement of interacting species is critical for understanding and manipulating ICD processes.