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“School of Nano-Sciences”

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Paper   IPM / Nano-Sciences / 16005
School of Nano Science
  Title:   Low-loss two-dimensional plasmon modes in antimonene
  Author(s): 
1 . Zahra Torbatian
2 . Mohammadi Alidoosti
3 . Dino Novko
4 . Reza Asgari
  Status:   Submitted
  Journal:
  Year:  2020
  Supported by:  IPM
  Abstract:
The effects of spin-orbit (SOC) and electron-phonon coupling on the collective excitation of doped monolayer Sb2 are investigated using density functional and many-body perturbation theory. The spin-orbit coupling is exclusively important for the monolayer Sb2 and it leads to the reconstruction of the electronic band structure. In particular, plasmon modes of monolayer Sb2 are quite sensitive to the SOC and are characterized by very low damping rates owing to small electron-phonon scatterings. Our results show plasmons in antimonene are significantly less damped compared to monolayer graphene when plasmon energies are hw > 0.2 eV due to smaller plasmon-phonon coupling in the former material.


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