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Superatom molecular orbital in C80.

Padmavathy Venkatakrishnan1, Artem V Kuklin2, Rahul Suresh3

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|December 22, 2023
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Summary
This summary is machine-generated.

Superatom Molecular Orbitals (SAMO) in fullerene derivatives are key for electronic applications. Cobalt-doped C80 fullerenes exhibit the lowest SAMO energy, offering insights for future electronic material design.

Keywords:
PDOSSAMOband dispersioncharge transferendohedral doping

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Area of Science:

  • Materials Science
  • Computational Chemistry
  • Condensed Matter Physics

Background:

  • Superatom Molecular Orbitals (SAMO) in fullerene derivatives are crucial for advanced electronic applications.
  • Understanding the electronic properties of doped fullerenes is essential for designing novel materials.

Purpose of the Study:

  • To investigate the Superatom Molecular Orbital (SAMO) states in endohedrally doped C80 derivatives using Density Functional Theory.
  • To analyze the impact of various metal dopants (Li, Sc, Mn, Ti, Ca, Fe, Co) on SAMO energies and wavefunction distributions.
  • To explore the relationship between charge transfer and SAMO energy levels in these doped fullerene systems.

Main Methods:

  • Density Functional Theory (DFT) calculations were employed.
  • Both molecular and periodic structures of endohedrally doped C80 derivatives were studied.
  • Charge transfer analysis was performed to understand dopant influence.

Main Results:

  • The choice and position of metal atoms significantly influence SAMO energy levels and wavefunction distributions.
  • Cobalt (Co)-substituted C80 exhibited the lowest SAMO energy among the studied derivatives.
  • Higher energy SAMO bands (pz, 2s, pxy) overlapped with dispersed bands, indicating increased intermolecular interactions.

Conclusions:

  • Metal atom doping in C80 fullerenes profoundly affects SAMO characteristics.
  • Co-doped C80 presents a promising candidate for low SAMO energy applications.
  • Findings provide a foundation for future research aiming to tune SAMO energy levels closer to the Fermi level in advanced fullerene materials.