Transport in quantum dot arrays

Straight and zigzag quantum dot arrays (QDAs) are fabricated on GaAs/AlGaAs single heterostructures by using electron-beam lithography and wet-chemical etching. The magnetoresistance is measured at T=4.2 K . Low-field magnetoresistance shows several peaks whose magnetic-field position depends on the...

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Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2002-03, Vol.13 (2), p.667-670
Main Authors: Mori, N, Ishida, T, Takamura, Y, Hamaguchi, C
Format: Article
Language:English
Subjects:
Electronic transport
Mesoscopic systems
Quantum dots
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Summary:Straight and zigzag quantum dot arrays (QDAs) are fabricated on GaAs/AlGaAs single heterostructures by using electron-beam lithography and wet-chemical etching. The magnetoresistance is measured at T=4.2 K . Low-field magnetoresistance shows several peaks whose magnetic-field position depends on the lateral shape of the QDAs. Numerical simulation of magnetoconductance characteristics is performed, and the results are compared with the experimental results.
ISSN:1386-9477
1873-1759
DOI:10.1016/S1386-9477(02)00254-0