In-Plane Magnetodrag between Dilute Two-Dimensional Systems

TL;DR

This study investigates in-plane magnetodrag in dilute double layer two-dimensional hole systems, revealing that magnetodrag behavior parallels single layer magnetoresistance and peaks when layer densities are matched, across various magnetic field strengths.

Contribution

It provides new insights into the behavior of magnetodrag under strong in-plane magnetic fields and its relation to spin polarization and density matching in two-dimensional systems.

Findings

Magnetodrag shows the same qualitative behavior as single layer magnetoresistance.

Maximum magnetodrag enhancement occurs when both layer densities are matched.

Magnetodrag behavior persists even at fields above full spin polarization.

Abstract

We performed in-plane magnetodrag measurements on dilute double layer two-dimensional hole systems, at in-plane magnetic fields that suppress the apparent metallic behavior, and to fields well above those required to fully spin polarize the system. When compared to the single layer magnetoresistance, the magnetodrag exhibits exactly the same qualitative behavior. In addition, we have found that the enhancement to the drag from the in-plane field exhibits a strong maximum when both layer densities are matched.