Single Crystal Growth and Spin Polarization Measurements of Diluted Magnetic Semiconductor (BaK)(ZnMn)2As2

TL;DR

This paper reports the first successful growth of single crystal (BaK)(ZnMn)2As2, a promising diluted magnetic semiconductor, and measures its high spin polarization, highlighting its potential for spintronics applications.

Contribution

It introduces the first growth of BZA single crystals and demonstrates high spin polarization measurement using Andreev reflection spectroscopy.

Findings

Successful growth of BZA single crystal

Achieved 66% spin polarization in BZA

Potential for spintronics applications

Abstract

Recently a new type diluted magnetic semiconductor (BaK)(ZnMn)2As2 (BZA) with high Cure temperature (Tc) was discovered showing independent spin and charge doping mechanism. This makes BZA a promising material for spintronics devices. Here we report for the first time the successful growth of BZA single crystal. An Andreev reflection junction that can be used to evaluate spin polarization was fabricated based on the BZA single crystal, a 66% spin polarization of the BZA single crystal was hence obtained by Andreev reflection spectroscopy analysis.