Measuring Rashba spin orbit interaction strength zero magnetic field

TL;DR

This paper introduces a novel multi-terminal electrical measurement technique to determine Rashba spin-orbit interaction strength without using magnetic fields, utilizing a three-terminal device with a voltage probe.

Contribution

The paper presents a new method for measuring Rashba spin-orbit interaction strength that does not require magnetic fields, differing from traditional magneto transport techniques.

Findings

Voltage at the non-magnetic probe depends on Rashba strength

Method works without magnetic fields

Potential for simpler spin-orbit measurements

Abstract

We propose a multi-terminal(Non-magnetic) mesoscopic electrical transport measurement for measuring Rashba spin orbit strength. The method proposed is different from the usual magneto transport measurements, which require magnetic fields for e.g. Shubnikov-de Hass oscillations or weak anti-localization measurements. Our methods uses three terminal mesoscopic device, in which one of the terminal acts as a voltage probe. We show that the Voltage measured at the non-magnetic voltage probe depends on the strength of Rashba spin-orbit interaction.