(Ga,Mn)As on patterned GaAs(001) substrates: Growth and magnetotransport

TL;DR

This study demonstrates the fabrication of (Ga,Mn)As microstructures on patterned GaAs(001) substrates, revealing unique electronic and magnetic properties through magnetotransport measurements, advancing the understanding of magnetic semiconductors in microstructured forms.

Contribution

It introduces a novel method for growing (Ga,Mn)As on patterned substrates, enabling lateral confinement of electronic and magnetic properties within a single sample.

Findings

Coexistence of (001) and (113)A properties in a single (Ga,Mn)As microstructure

Distinct magnetotransport behaviors observed in patterned structures versus planar samples

Successful integration of magnetic and electronic property control in microfabricated semiconductors.

Abstract

A new type of (Ga,Mn)As microstructures with laterally confined electronic and magnetic properties has been realized by growing (Ga,Mn)As films on [1-10]-oriented ridge structures with (113)A sidewalls and (001) top layers prepared on GaAs(001) substrates. The temperature- and field-dependent magnetotransport data of the overgrown structures are compared with those obtained from planar reference samples revealing the coexistence of electronic and magnetic properties specific for (001) and (113)A (Ga,Mn)As on a single sample.