Spin Field Effect Transistors with Ultracold Atoms

TL;DR

This paper proposes two experimental schemes using ultracold atoms and laser fields to create analogs of the spintronic Datta-Das transistor, enabling exploration of spin-orbit coupling effects in a controllable atomic system.

Contribution

It introduces two novel methods to realize atomic analogs of the Datta-Das transistor using tripod stimulated Raman adiabatic passage.

Findings

Proposed two experimental schemes for atomic DDT analogs.

Demonstrated how laser fields can mimic relativistic spin-orbit coupling.

Provided a pathway for studying spintronics phenomena with ultracold atoms.

Abstract

We propose a method of constructing cold atom analogs of the spintronic device known as the Datta-Das transistor (DDT), which despite its seminal conceptual role in spintronics, has never been successfully realized with electrons. We propose two alternative schemes for an atomic DDT, both of which are based on the experimental setup for tripod stimulated Raman adiabatic passage. Both setups involve atomic beams incident on a series of laser fields mimicking the relativistic spin orbit coupling for electrons that is the operating mechanism of the DDT.