MAGNETO-COULOMB DRAG - INTERPLAY OF ELECTRON-ELECTRON INTERACTIONS AND LANDAU QUANTIZATION

We use the Kubo formalism to calculate the transresistivity rho(21) fo r carriers in coupled quantum wells in a large perpendicular magnetic field B. We find that rho(21) is enhanced by approximately 50-100 time s over that of the B = 0 case in the interplateau regions of the integ er quantum Hall effect. The presence of both electron-electron interac tions and Landau quantization results in (i) a twin-peaked structure o f rho(21)(B) in the interplateau regions at low temperatures and (ii) for the chemical potential at the center of a Landau level band, a pea ked temperature dependence of rho(21)(T)/T-2.