Abstract
Frictional drag between isolated two-dimensional electron gases separated by a thin barrier has been observed at low temperatures in GaAs/AlGaAs double-quantum-well structures. Separate electrical connection to the two electron systems allows the injection of current into one and the detection of a small drag voltage across the other. The drag voltage is a direct measure of the interwell momentum relaxation rate. Measurements of this rate are in qualitative agreement with calculations of an interwell Coulomb scattering model.
Original language | English (US) |
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Pages (from-to) | 1216-1219 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 66 |
Issue number | 9 |
DOIs | |
State | Published - 1991 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy