Adiabatic Amplification of Plasmons and Demons in 2D Systems

Zhiyuan Sun, D. N. Basov, and M. M. Fogler
Phys. Rev. Lett. 117, 076805 – Published 12 August 2016
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Abstract

We theoretically investigate charged collective modes in a two-dimensional conductor with hot electrons where the instantaneous mode frequencies gradually increase or decrease with time. We show that the loss compensation or even amplification of the modes may occur. We apply our theory to two types of collective modes in graphene, the plasmons and the energy waves, which can be probed in optical pump-probe experiments.

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  • Received 26 January 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.076805

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Zhiyuan Sun1, D. N. Basov1,2, and M. M. Fogler1

  • 1Department of Physics, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093
  • 2Department of Physics, Columbia University, 538 West 120th Street, New York, New York 10027

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Issue

Vol. 117, Iss. 7 — 12 August 2016

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