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Confined acoustic and optical plasmons in double-layered quantum-wire arrays with strong tunneling

Dethlefsen, A. F. ; Heyn, Christian ; Heitmann, Detlef ; Schüller, Christian
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Date of publication of this fulltext: 05 Aug 2009 13:33


Abstract

We investigate electronic excitations in GaAs-AlxGa1-xAs double-layered quantum wire arrays with strong tunneling coupling by resonant inelastic light scattering. By applying an external electric field, we can change the one-dimensional (1D) electron density and the symmetry of the double quantum-well (DQW) structure at the same time. We identify confined optical 1D intersubband plasmons ...

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