Influence of Nuclear Spin Polarization on Quantum Wire Conductance

TL;DR

This paper explores how nuclear spin polarization affects quantum wire conductance, proposing a method to measure nuclear spin relaxation times through conductance time dependence influenced by magnetic interactions.

Contribution

It introduces a novel approach to determine nuclear spin relaxation times by analyzing conductance changes in a quantum wire under magnetic and spin-orbit interactions.

Findings

Conductance varies over time due to nuclear spin dynamics.

Relaxation times can be extracted from conductance measurements.

External magnetic fields influence conductance evolution.

Abstract

In this work, we study a possibility to measure the transverse and longitudinal relaxation times of a collection of polarized nuclear spins located in the region of a quantum wire via its conductance. The interplay of an external in-plane magnetic field, spin-orbit interaction, and the changing field of the spin-polarized nuclei cause the conductance of the quantum wire to evolve in time. We show that it is possible to extract the transverse and longitudinal relaxation times of the spin-polarized nuclei from the time dependence of the conductance.