Quantum dots based on spin properties of semiconductor heterostructures

TL;DR

This paper explores a new type of semiconductor quantum dots created by modulating spin-orbit coupling in heterostructures, revealing unique spin properties and potential for bound electron states.

Contribution

It introduces a novel quantum dot design based on spin-orbit modulation and predicts their electronic and spin characteristics using theoretical models.

Findings

Confined one-electron states with unique spin properties

Two electrons can form a bound state in these quantum dots

Potential applications in spintronics and quantum computing

Abstract

The possibility of a novel type of semiconductor quantum dots obtained by spatially modulating the spin-orbit coupling intensity in III-V heterostructures is discussed. Using the effective mass model we predict confined one-electron states having peculiar spin properties. Furthermore, from mean field calculations (local-spin-density and Hartree-Fock) we find that even two electrons could form a bound state in these dots.