Spin-orbit-enhanced Wigner localization in quantum dots

TL;DR

This paper demonstrates that Rashba spin-orbit coupling enhances Wigner localization in quantum dots, allowing it to occur at higher densities, and reports recurring patterns in pair-correlated densities linked to collective modes.

Contribution

It reveals how Rashba spin-orbit interaction amplifies Wigner localization, expanding the conditions under which it can be observed in quantum dots.

Findings

Rashba coupling increases Wigner localization at higher densities

Recurring shapes in pair-correlated densities suggest collective excitations

Enhanced localization could impact quantum dot applications

Abstract

We investigate quantum dots with Rashba spin-orbit coupling in the strongly-correlated regime. We show that the presence of the Rashba interaction enhances the Wigner localization in these systems, making it achievable for higher densities than those at which it is observed in Rashba-free quantum dots. Recurring shapes in the pair-correlated densities of the yrast spectrum, which might be associated with rotational and vibrational modes, are also reported.