Magnetization of Nuclear-Spin-Polarization-Induced Quantum Ring

TL;DR

This paper theoretically explores a quantum ring created by nuclear spin polarization, analyzing its electron energy spectrum and magnetic response, and how these properties evolve over time due to nuclear spin dynamics.

Contribution

It introduces a novel concept of a nuclear-spin-polarization-induced quantum ring and studies its electronic and magnetic properties.

Findings

Electron energy spectrum is affected by nuclear spin polarization.

Magnetic response varies with nuclear spin diffusion and relaxation.

Time evolution of properties shows dynamic behavior due to nuclear spin processes.

Abstract

Properties of a Nuclear-Spin-Polarization-Induced Quantum Ring (NSPI QR) are studied theoretically. In the proposed system a local nuclear spin polarization creates an effective hyperfine field which confines the electrons with the spins opposite to the hyperfine field to the regions of maximal nuclear spin polarization. We investigate the electron energy spectrum and the magnetic response of NSPI QR and their evolution in time due to the nuclear spin diffusion and relaxation.