Conference paper
Coulomb drag: a probe of electron interactions in coupled quantum wells
As semiconductor devices shrink in size and in dimensionality, interactions between charge carriers become more and more important. There is a simple physical reason behind this behavior: fewer carriers lead to less effective screening, and hence stronger effective interactions. A point in case are one-dimensional systems (quantum wires): there electron-electron interactions may lead to a behavior, which is qualitatively different from the standard Fermi liquid picture (Luttinger liquids).
Electron-electron interactions also play a central role in the fractional quantum Hall effect, which displays an extremely rich physical behavior, and remains a very active area for research. Thus there is a clear need for a better understanding of electron-electron interactions in dimensionally reduced semiconductor structures.
We have reviewed recent developments in the theory of Coulomb drag. Our calculations lead to several predictions of effects not yet seen experimentally We conclude that Coulomb drag, in particular when combined with magnetic fields, is a very versatile tool for directly probing interparticle interactions in dimensionally restricted systems.
A further line for research could be the study of quantum wires: there the interactions may lead to even more dramatic effects
Language: | English |
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Publisher: | IEEE |
Year: | 1996 |
Pages: | 21-30 |
Proceedings: | International Semiconductor Conference |
ISBN: | 0780332237 and 9780780332232 |
Types: | Conference paper |
DOI: | 10.1109/SMICND.1996.557301 |
ORCIDs: | Jauho, Antti-Pekka |
Boltzmann equation Charge carrier processes Charge carriers Coulomb drag Displays Magnetic field measurement Magnetic properties Measurement standards Particle scattering Probes Semiconductor devices Wires carrier mobility charge carriers coupled quantum wells dimensionally reduced semiconductor structures electron-electron interactions fractional quantum Hall effect one-dimensional systems quantum Hall effect quantum interference phenomena quantum wires semiconductor devices semiconductor quantum wells semiconductor quantum wires