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

G Q Zhao; C J Lin; Z Deng; G X Gu; S Yu; X C Wang; Z Z Gong; Yasutomo J Uemura; Y Q Li; C Q Jin

doi:10.1038/s41598-017-08394-z

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

Sci Rep. 2017 Nov 3;7(1):14473. doi: 10.1038/s41598-017-08394-z.

Authors

G Q Zhao^{1

2}, C J Lin¹, Z Deng¹, G X Gu¹, S Yu¹, X C Wang¹, Z Z Gong³, Yasutomo J Uemura³, Y Q Li^{4

5}, C Q Jin^{6

7}

Affiliations

¹ Institute of Physics, Chinese Academy of Sciences; Collaborative Innovation Center of Quantum Matter, Beijing, 100190, China.
² University of Chinese Academy of Sciences, Beijing, 100190, China.
³ Department of Physics, Columbia University, New York, NY, 10027, USA.
⁴ Institute of Physics, Chinese Academy of Sciences; Collaborative Innovation Center of Quantum Matter, Beijing, 100190, China. yqli@iphy.ac.cn.
⁵ University of Chinese Academy of Sciences, Beijing, 100190, China. yqli@iphy.ac.cn.
⁶ Institute of Physics, Chinese Academy of Sciences; Collaborative Innovation Center of Quantum Matter, Beijing, 100190, China. Jin@iphy.ac.cn.
⁷ University of Chinese Academy of Sciences, Beijing, 100190, China. Jin@iphy.ac.cn.

Abstract

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.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't