Dynamical structure factor of a quantum wire in the random-phase approximation
- 15 July 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 42 (2) , 1496-1499
- https://doi.org/10.1103/physrevb.42.1496
Abstract
We present self-consistent calculations of the single-particle and collective excitations in a quasi-one-dimensional electron gas or quantum wire. The dynamical structure factor, evaluated in the random-phase approximation (RPA), displays unique line shapes and dispersion relations which are in sharp contrast with the results expected for higher-dimensional electron gases. A well-defined spectral feature is attributed to an acoustic plasmon. The calculated shift of the intersubband resonance frequency, caused by the depolarization effect, agrees well with previous experiments.Keywords
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