Bønsager, Martin Christian2; Flensberg, Karsten3; Hu, Ben Yu-Kuang1; Jauho, Antti-Pekka4
1 Department of Micro- and Nanotechnology, Technical University of Denmark2 Indiana University3 Dansk Institut for Fundamental Metrologi4 Center for Nanostructured Graphene, Center, Technical University of Denmark
We use the Kubo formalism to calculate the transresistivity rho(21) for carriers in coupled quantum wells in a large perpendicular magnetic field B. We find that rho(21) is enhanced by approximately 50-100 times over that of the B = 0 case in the interplateau regions of the integer quantum Hall effect. The presence of both electron-electron interactions and Landau quantization results in (i) a twin-peaked structure of 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 peaked temperature dependence of rho(21)(T)/T-2.
Physical Review Letters, 1996, Vol 77, Issue 7, p. 1366-1369
SYSTEMS; SCATTERING; MUTUAL DRAG; HOLE TRANSPORT; HETEROSTRUCTURES; QUANTUM-WELLS; 2D; FRICTION; GAS LAYERS; SPATIALLY SEPARATED ELECTRON