Magnetic anisotropies of quantum dots

TL;DR

This paper explores the magnetic anisotropies in doped quantum dots, demonstrating how tuning confinement can control magnetic easy axes, revealing complex behaviors not seen in bulk materials.

Contribution

It introduces a detailed analysis of magnetic anisotropies in quantum dots using models of anisotropic g-factors and magnetocrystalline energy, highlighting tunable magnetic properties.

Findings

Quantum dots exhibit complex magnetic anisotropy diagrams.

Confinement tuning controls magnetic easy axes.

Rich anisotropy behaviors differ from bulk materials.

Abstract

Magnetic anisotropies in quantum dots (QDs) doped with magnetic ions are discussed in terms of two frameworks: anisotropic $g$-factors and magnetocrystalline anisotropy energy. It is shown that even a simple model of zinc-blende p-doped QDs displays a rich diagram of magnetic anisotropies in the QD parameter space. Tuning the confinement allows to control magnetic easy axes in QDs in ways not available for the better-studied bulk.