Frictional magnetodrag between spatially separated two- dimensional electron systems: Coulomb versus phonon mediated electron–electron interaction
نویسندگان
چکیده
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 L: We find the strikingly different magnetic field and temperature dependence of the transresistivity for L 1⁄4 30 and 200 nm and ascribe this to the weak screening effect at large inter-layer separations. q 2003 Elsevier Ltd. All rights reserved. PACS: 73.50.Dn; 73.20>Mf
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