Spin Hall effect transistor

TL;DR

This paper introduces an all-semiconductor spin Hall effect transistor that combines spin transistors and spin Hall effects, operating without electrical current and demonstrating a spin AND logic function.

Contribution

It presents a novel spin Hall effect transistor that overcomes interface issues and operates without Joule heating, integrating spintronics with microelectronics.

Findings

Demonstrated a spin AND logic function in a semiconductor channel.

Operates without electrical current, reducing Joule heating.

Validated results with Monte Carlo simulations.

Abstract

Spin transistors and spin Hall effects have been two separate leading directions of research in semiconductor spintronics which seeks new paradigms for information processing technologies. We have brought the two directions together to realize an all-semiconductor spin Hall effect transistor. Our scheme circumvents semiconductor-ferromagnet interface problems of the original Datta-Das spin transistor concept and demonstrates the utility of the spin Hall effects in microelectronics. The devices use diffusive transport and operate without electrical current, i.e., without Joule heating in the active part of the transistor. We demonstrate a spin AND logic function in a semiconductor channel with two gates. Our experimental study is complemented by numerical Monte Carlo simulations of spin-diffusion through the transistor channel.