New transport phenomena in coupled quantum wells

✍ Scribed by J.P. Eisenstein

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 855 KB
• Volume: 12
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1016/0749-6036(92)90231-s

✦ Synopsis

Recent studies of bilayer two-dimensional electron systems in GaAs/AlGaAs double auantum wells are reviewed.

After describing a techniaue for making seuarate connections to the individual 2D layers, three cl&ses of experiments will bi ouilined: "drag" studies of interlaver electron-electron interactions, 2D-2D resonant tunneling exp&iments, and lastly,-a new method for determining the compressibility of thk interacting 2D electron gas. As a final example of the new physics afforded by bilayer 2D systems, the recent discovery of a new fractional quantum Hall state, not found in single layer systems, will be discussed.