Magneto-Coulomb drag: interplay of electron--electron interactions and Landau quantization

Details Magneto-Coulomb drag: interplay of electron--electron interactions and Landau quantization Magneto-Coulomb drag: interplay of electron--electron interactions and Landau quantization

1996-03-15

arxiv.org/abs/cond-mat/9603110v1

Phys. Rev. Lett. 77, 1366 (1996)

Physics

Condensed Matter

4 pages, RevTeX, 4 PS figures in text using epsf

Scientific paper

10.1103/PhysRevLett.77.1366

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 inter-plateau regions at low temperatures, and, (ii) for the chemical potential at the center of a Landau level band, a peaked temperature dependence of $\rho_{21}(T)/T^2$.

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