Collective excitations of a system of coupled relativistic and non-relativistic two-dimensional electron gases

Ajit C. Balram; Jimmy A. Hutasoit; Jainendra K. Jain

doi:10.1103/physrevb.90.045103

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arXiv · 1405.4014

Collective excitations of a system of coupled relativistic and non-relativistic two-dimensional electron gases

Ajit C. Balram·Jimmy A. Hutasoit·Jainendra K. Jain

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Abstract

We study collective excitations of a two-dimensional electron system consisting of two kinds of charge carriers: relativistic or Dirac electrons with linear dispersion and non-relativistic electrons with parabolic dispersion. We find that the strength of the interaction between the different charge carriers, i.e., the inter-species interaction, plays a significant role in determining the number of plasmon modes as well as their dispersions in certain parameter regimes.

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Ajit C. Balram, Jimmy A. Hutasoit, Jainendra K. Jain. 2014-05-15. Collective excitations of a system of coupled relativistic and non-relativistic two-dimensional electron gases. https://doi.org/10.1103/physrevb.90.045103

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