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

G Q ZhaoC J LinZ DengG X GuS YuX C WangZ Z GongYasutomo J UemuraYongqing LiC Q Jin

Published in: Scientific reports (2017)

Recently a new diluted magnetic semiconductor, (Ba,K)(Zn,Mn)2As2 (BZA), with high Curie temperature was discovered, showing an independent spin and charge-doping mechanism. This makes BZA a promising material for spintronics devices. We report the successful growth of a BZA single crystal for the first time in this study. An Andreev reflection junction, which 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 obtained by Andreev reflection spectroscopy analysis.

Keyphrases

room temperature
single molecule
transition metal
density functional theory
solid state
mass spectrometry
risk assessment