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Parallel transport of electrons in double quantum wells

✍ Scribed by B. Vinter; A. Tardella

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
262 KB
Volume
2
Category
Article
ISSN
0749-6036

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✦ Synopsis

Calculations have been performed on the mobility of electrons in a double quantum well structure in which the barrier separating the two parts of the channel is sufficiently thin to allow tunnelling. The subband structure is completely taken into account in a self-consistent calculation and all significant scattering mechanisms (scattering on remote impurities, on selectively introduced channel impurities, on acoustic and optical phonons) are included in order to obtain quantitatively realistic results from low to room temperature.

We discuss how the thickness of the barrier influences the conductivity of the channel vs density and show that it is possible to design structures having negative transconductance with a peak-to-valley ratio of 6 at T = 77 K.

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