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IPM
30
YEARS OLD

“School of Nano-Sciences”

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Paper   IPM / Nano-Sciences / 15378
School of Nano Science
  Title:   Plasmon-phonon-polaritons in encapsulated phosphorene
  Author(s): 
1.  Farnood Ghamsari
2.  Reza Asgari
  Status:   To Appear
  Journal: Plasmonics
  Supported by:  IPM
  Abstract:
We consider a system consists of a doped monolayer phosphorne embedded between two semi-infinite hexagonal Boron Nitride (hBN) along the hetrostructure direction. The azimuthal angle dependence of the plasmon-polariton and plasmon phonon-polariton modes of the hybrid system are calculated based on the random phase approximation at finite temperature. The collective modes illustrate strong anisotropic and strong coupling with phonon modes of the polar media and furthermore, the Landau damping occurs due to the intraband processes when plasmon enters intraband electron-hole continuum. Our numerical results show that the plasmon mode is highly confined on the surface along the zigzag direction. Owing to the strong phonon-electron interaction, the phonon dispersions in the Reststrahlen bands are angle dependent.

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