Many-body correlations probed by plasmon-enhanced drag measurements in double quantum well structures

Details Many-body correlations probed by plasmon-enhanced drag measurements in double quantum well structures Many-body correlations probed by plasmon-enhanced drag measurements in double quantum well structures

1998-09-02

arxiv.org/abs/cond-mat/9809049v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, revtex Accepted in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.58.12621

Electron drag measurements of electron-electron scattering rates performed close to the Fermi temperature are reported. While evidence of an enhancement due to plasmons, as was recently predicted [K. Flensberg and B. Y.-K. Hu, Phys. Rev. Lett. 73, 3572 (1994)], is found, important differences with the random-phase approximation based calculations are observed. Although static correlation effects likely account for part of this difference, it is argued that correlation-induced multiparticle excitations must be included to account for the magnitude of the rates and observed density dependences.

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