Transport Regimes Spanning Magnetization-Coupling Phase Space

TL;DR

This paper explores how transport properties change across different regimes defined by coupling and magnetization strength, identifying four distinct regimes and comparing molecular dynamics results with existing theories.

Contribution

It provides the first comprehensive mapping of transport regimes over the full parameter space of coupling and magnetization strength, including new boundary predictions.

Findings

Molecular dynamics simulations agree with predicted regime boundaries.

Existing theories succeed in some regimes but fail in others.

No current theory covers all identified regimes.

Abstract

The manner in which transport properties vary over the entire parameter-space of coupling and magnetization strength is explored for the first time. Four regimes are identified based on the relative size of the gyroradius compared to other fundamental length scales: the collision mean free path, Debye length, distance of closest approach and interparticle spacing. Molecular dynamics simulations of self-diffusion and temperature anisotropy relaxation spanning the parameter space are found to agree well with the predicted boundaries. Comparison with existing theories reveals regimes where they succeed, where they fail, and where no theory has yet been developed.