Collective excitations and instabilities in double-wire electron-hole systems

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Abstract

We investigate the collective excitations in a double-wire system of spatially separated electrons and holes. Self-consistent local-field factors are used to describe the exchange-correlation effects at low densities. Plasmon dispersions and the dynamic structure factor S(q, w) are studied. Charge-density-wave instabilities in these structures are examined within the linear response theory at small and finite q-values.

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Journal of Physics Condensed Matter

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Institute of Physics Publishing Ltd.

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Published Version (Please cite this version)

Language

English