Title

Negative long wavelength dielectric constant in semiconductor QWs

RIS ID

19101

Publication Details

Pilehrood, S., Gao, F., Ma, Z., Xu, W. & Zhang, C. (2007). Negative long wavelength dielectric constant in semiconductor QWs. Physica Status Solidi. C: Current Topics in Solid State Physics, 4 (2), 451-453.

Abstract

In this work we present an analytical and numerical result of the dielectric function of electronic systemswith Rashba spin-orbit interaction. By solving the quantum equation of motion for the electron densitymatrix, we obtained the dielectric function in the mean-field approximation. It is shown that when themomentum transfer q for an electronic transition is smaller than a critical value characterized by the spinorbitinteraction, the static dielectric function increases with q, indicating on-set of a new collective state.

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Link to publisher version (DOI)

http://dx.doi.org/10.1002/pssc.200673353