2003/12/31 by E. G. Mishchenko, Michael Reizer, M. Yu. Reizer +1
Engineering · Materials Science · Physics and Astronomy · #Electronic and Structural Properties of Oxides #Quantum and electron transport phenomena #Semiconductor materials and devices #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.69.195302
published as Phys. Rev. B 69, 195302 (2004). · 8 pages, 4 figures; final form, misprints corrected
arxiv created 2004/04/23 · openalex publication_date 2004/05/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In a ballistic two-dimensional electron gas, the Landau damping does not lead to plasmon attenuation in a broad interval of wave vectors q\ensuremath\lesssimkF. Similarly, it does not contribute to the optical conductivity \ensuremathσ(\ensuremathω,q) in a wide domain of its arguments, EF>\ensuremathω>qvF, where EF, kF, and vF are, respectively, the Fermi energy, wave vector, and velocity of the electrons. We identify processes that result in the plasmon attenuation in the absence of Landau damping. These processes are: the excitation of two electron-hole pairs, phonon-assisted excitation of one pair, and a direct plasmon-phonon conversion. We evaluate the corresponding contributions to the plasmon linewidth and to the optical conductivity.