Abstract
We study the frictional drag due to Coulomb and phonon mediated electron–electron interaction in a double layer electron system exposed to a perpendicular magnetic field. We calculate the transresistivity as a function of magnetic field, temperature, and inter-layer spacing Λ. We find the strikingly different magnetic field and temperature dependence of the transresistivity for Λ=30 and 200 nm and ascribe this to the weak screening effect at large inter-layer separations.
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