(InAs)3(GaAs)1 superlattice channel field-effect transistor grown by molecular beam epitaxy

Abstract
A metal‐insulator‐semiconductor field‐effect transistor (MISFET) using the InAs‐GaAs superlattice as a channel layer has been successfully demonstrated for the first time. Device structure was grown by molecular beam epitaxy. The MISFET with 1.0 μm gate length exhibits a maximum external dc transconductance of 212 mS/mm at Vds =3.0 V and Vg =−1.5 V. This value is high among 1.0 μm gate length devices.