Numerical Kubo formula study of frictional drag in the integer quantum Hall regime

K. Nomura, A. H. Macdonald

Research output: Contribution to journalArticlepeer-review


We study interlayer factional drag between two-dimensional electron systems in the strong magnetic field limit by evaluating the weak-coupling Kubo formula for interlayer drag numerically. The key quantity in this theory is the disorder averaged "triangle function", a product of three Greens functions of electrons that represents the dc current response of electrons in one layer to charge fluctuations in a remote current-carrying layer. We find that the disorder averaged triangle functions are proportional to the momentum transfer q→ at small |q→| and that they change sign under a ν → 1 - ν particle-hole transformations, vanishing for half-filled Landau levels.

Original languageEnglish
Pages (from-to)3621-3624
Number of pages4
JournalInternational Journal of Modern Physics B
Issue number27-29
Publication statusPublished - Nov 30 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics


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