AbstractWe report on a strong piezoresistive effect in GaAs/ Inx Ga1–x As/AlAs superlattice structures fabricated on a GaAs‐base cantilever. The measurements of the piezoresistive properties were performed for tensile strains by static pressure experiments. The maximum gauge factor (GF) for the GaAs/Inx Ga1–x As/AlAs epilayer can be estimated to 200, which is higher than the value of the gauge factor reported for Si transducers. Our results demonstrate a higher potential of GaAs/Inx Ga1–x As/AlAs superlattice structures for the development of piezoresistive sensors. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)