Turkish Journal of Physics
DOI
-
Abstract
We study the Coulomb drag rate for electrons in a double quantum-wire structure in the presence of disorder. We use the particle number-conserving relaxation-time approximation to phenomenologically broaden the response functions entering the drag rate expression to account for the disorder effects. In contrast to the usual low-temperature regime investigated by various researchers, we focus our attention on the high-temperature drag rate to which plasmon modes are known to make substantial contribution. The full wave vector and frequency dependent random-phase approximation (RPA) at finite temperature and disorder strength is employed to describe the effective interlayer Coulomb interaction. The interplay between the screening effects and disorder at high temperature yields a nonmonotone behavior of the drag rate on the disorder parameter. The reduction in the interwire momentum transfer rate may be used as a probe to investigate localization properties of coupled quantum-wire systems. PACS numbers:\ 73.50.Dn, 73.20.Mf, 73.20.Dx
First Page
143
Last Page
156
Recommended Citation
TANATAR, B. (2000) "Effects of disorder on the drag rate in double quantum-wire systems," Turkish Journal of Physics: Vol. 24: No. 2, Article 9. Available at: https://journals.tubitak.gov.tr/physics/vol24/iss2/9
