• Surface plasma waves over bismuth-vacuum interface

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      https://www.ias.ac.in/article/fulltext/pram/061/03/0625-0631

    • Keywords

       

      Surface plasma waves; bismuth; semimetals; plasma processing

    • Abstract

       

      A surface plasma wave (SPW) over bismuth-vacuum interface has a signature of mass anisotropy of free electrons. For SPW propagation along the trigonal axis there is no birefringence. The frequency cutoff of SPW$$\omega _{cutoff} = \omega _p /\sqrt {2(\varepsilon _L + \varepsilon )} $$ lies in the far infrared region and can be accessed using free electron laser. The damping rate of waves at low temperatures is low. The surface plasma wave may be excited by an electron beam of current ∼100 mA propagating parallel to the interface in its close proximity.

    • Author Affiliations

       

      Ashim P Jain1 J Parashar1

      1. Department of Applied Physics, Samrat Ashok Technological Institute, Vidisha - 464 001, India
    • Dates

       
  • Pramana – Journal of Physics | News

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