Giant Fluctuations of Coulomb Drag in a Bilayer System
Giant Fluctuations of Coulomb Drag in a Bilayer System
The Coulomb drag in a system of two parallel layers is the result of electron-electron interaction between the layers. We have observed reproducible fluctuations of the drag, both as a function of magnetic field and electron concentration, which are a manifestation of quantum interference of electrons in the layers. At …