Photoinjected plasma in semiconductor quantum wires: Soft-like upper plasmon
Instituto de Física "Gleb Wataghin”, Universidade Estadual de Campinas
Unicamp 13083-970 Campinas, São Paulo, Brazil
Accepted: 28 December 1998
We consider the steady-state photoinjected two-component plasma in quasi–one-dimensional semiconductor materials, generated by c.w. UV-light illumination. We analyze the two types of carrier's collective elementary excitations in this far-from-equilibrium dissipative system. It is predicted that at a critical level of excitation there follows a phenomenon consisting in a drastic change of behavior in the propagation of the so-called upper plasma waves.
PACS: 78.66.Fd – III-V semiconductors / 72.15.Nj – Collective modes (e.g., in one-dimensional conductors) / 78.30.Fs – III-V and II-VI semiconductors
© EDP Sciences, 1999