Suspended single-electron transistors: fabrication and measurement

TL;DR

This paper reports the fabrication and measurement of suspended aluminum single-electron transistors (SUSETs), which are isolated from the substrate, showing high-quality electronic features similar to traditional SETs.

Contribution

The study introduces a novel suspended SET design that is not in contact with the substrate, demonstrating comparable electronic properties to standard devices.

Findings

Well-defined I-V and dI/dV-V features observed

Device quality comparable to traditional SETs

Suspended design reduces substrate interactions

Abstract

We have fabricated aluminum single-electron transistors in which the island is not in contact with the substrate. This new type of device, which can be called suspended single-electron transistor (SUSET), displayed well-defined I-V and dI/dV-V features typical for high-quality standard SET's.