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説明:

Retardation effects (REs) are known to cause a crossover from linear to sublinear behaviors in the dispersion relation of two-dimensional (2D) plasma waves at long wavelengths. In the present work, we systematically analyze REs on plasma waves in both 2D and 1D electron gases, and we clarify the experimental conditions for observing the crossover. We show that graphene is the only material that might gratify the conditions with current technology. Although it closely imitates graphene, the surface of 3D topological insulators is found to be unsuitable for this purpose due to strong electronic scattering by intrinsic disorder. We also show that the crossover, though theoretically possible, virtually never occurs in 1D plasma. In addition, the relevance of our results to terahertz plasmonics is discussed.

権利情報:

• In Copyright
  

  ©2026 American Physical Society

キーワード: plasma waves, retardation effects, graphene, topological insulators, quantum wires, dispersion relation, terahertz plamonics

刊行年月日: 2015-07-28

出版者: American Physical Society (APS)

掲載誌:

• Physical Review B (ISSN: 10980121) vol. 92 issue. 4 045434

研究助成金:

• Japan Society for the Promotion of Science 15K13507
• Ministry of Education, Culture, Sports, Science, and Technology 25107005

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.8726

公開URL: https://doi.org/10.1103/physrevb.92.045434

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更新時刻: 2026-11-11 15:23:38 +0900

MDRでの公開時刻: 2026-11-11 16:25:06 +0900