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 View the MathML source. 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.