Nanostructure Alignment for Hot Electron Interference/Diffraction Devices.

An ultrafine fabrication technique for hot electron interference/diffraction devices was developed. The alignment of two nanostructures by e-beam direct writing before and after crystal growth was reported for the first time. The aligned structure consists of 70 nm pitch grating GaInAs/InP buried structure and 70 nm pitch stripe electrode of Cr/Au.