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    • Keywords


      Plasmon resonances; Van der Waals heterostructures; transition metal dichalcogenides.

    • Abstract


      We have carried out a study of collective excitations for MoS$_2$/graphene van derWaals heterostructures (vdWHs) using time-dependent density function theory (TDDFT).The resonance absorption spectra of the structures were analysed to determine the polarisation direction in the X-, Y - and Z- axes. We found that the resonance intensities in MoS$_2$/graphene structures were larger than the bilayer graphene structures in high-energy resonance, and the resonance peak of the graphene/MoS$_2$/graphene heterostructure almost annihilated at the low-energyresonance band became broadened at the high-energy resonance band. We studied Fourier-induced charge density of MoS$_2$/graphene structures and found that they have dipole-like characteristics in the low-energy region.

    • Author Affiliations



      1. College of Science, Zhongyuan University of Technology, Zhengzhou 450007, China
      2. Institute of Applied Mathematics, ZhengZhou Shengda University of Economics, Business and Management, Zhengzhou 451191, China
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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