# Aharonov-Bohm oscillations in the presence of strong spin-orbit interactions

## TL;DR

This paper reports the observation of Aharonov-Bohm oscillations in a p-type GaAs ring with strong spin-orbit interactions, revealing spin-related phase effects and harmonic contributions through detailed interference measurements.

## Contribution

It demonstrates the detection of spin geometric phases and harmonic oscillations in AB interference patterns in a strongly spin-orbit coupled system.

## Key findings

- Observation of clear AB oscillations with beating patterns
- Identification of second harmonic contributions in oscillations
- Detection of a resistance minimum at zero magnetic field indicating destructive spin interference

## Abstract

We have measured highly visible Aharonov-Bohm (AB) oscillations in a ring structure defined by local anodic oxidation on a p-type GaAs heterostructure with strong spin-orbit interactions. Clear beating patterns observed in the raw data can be interpreted in terms of a spin geometric phase. Besides h/e oscillations, we resolve the contributions from the second harmonic of AB oscillations and also find a beating in these h/2e oscillations. A resistance minimum at B=0T, present in all gate configurations, is the signature of destructive interference of the spins propagating along time-reversed paths.