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      Dynamical correlations in Coulomb drag effect

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      Author
      Tanatar, Bilal
      Davoudi, B.
      Hu, B.Y.-K.
      Date
      2003
      Source Title
      Physica E: Low-dimensional Systems and Nanostructures
      Print ISSN
      1386-9477
      Publisher
      Elsevier
      Volume
      18
      Issue
      1-3
      Pages
      165 - 166
      Language
      English
      Type
      Conference Paper
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      Abstract
      Motivated by recent Coulomb drag experiments in pairs of low-density two-dimensional (2D) electron gases, we investigate the influence of correlation effects on the interlayer drag rate as a function of temperature. We use the self-consistent field method to calculate the intra and interlayer local-field factors Gij(q,T) which embody the short-range correlation effects. We calculate the transresistivity using the screened effective interlayer interactions that result from incorporating these local-field factors within various approximation schemes. Our results suggest that dynamic (frequency dependent) correlations play an important role in enhancing the Coulomb drag rate.
      Keywords
      Correlations
      Coulomb drag effect
      Effective interactions
      Correlation methods
      Frequencies
      Electron gas
      Permalink
      http://hdl.handle.net/11693/27539
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/S1386-9477(02)01069-X
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      • Department of Physics 2299
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