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Exchange-driven bilayer-to-monolayer charge transfer in an asymmetric double-quantum-well

✍ Scribed by A.R. Hamilton; M.Y. Simmons; C.B. Hanna; J.C. Dı́az-Vélez; M. Pepper; D.A. Ritchie

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 236 KB
Volume: 12
Category: Article
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(01)00351-4

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✦ Synopsis

We present data which shows for the ÿrst time that an exchange-driven bilayer-to-monolayer transition occurs in an externally biased double quantum well system at B = 0 as the total carrier density is increased. This transition is due to the negative compressibility of the low density carrier systems and the layer imbalance caused by external gate biases.

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