The Effect of Spin Splitting on the Metallic Behavior of a Two-Dimensional System

TL;DR

This study investigates how spin splitting influences the metallic behavior in a two-dimensional hole system within a GaAs quantum well, highlighting the role of confinement potential symmetry.

Contribution

It demonstrates the dependence of metallic behavior on spin-splitting caused by confinement potential symmetry in a 2D system.

Findings

Metallic behavior varies with confinement potential symmetry.

Spin-splitting affects the temperature dependence of resistivity.

Results suggest spin effects are crucial in 2D metallic states.

Abstract

Experiments on a constant-density two-dimensional hole system in a GaAs quantum well reveal that the metallic behavior observed in the zero-magnetic-field temperature dependence of the resistivity depends on the symmetry of the confinement potential and the resulting spin-splitting of the valence band.