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稀磁半导体（BaK）（ZnMn）As的单晶生长与自旋极化测量

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

作者信息

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

机构信息

Institute of Physics, Chinese Academy of Sciences; Collaborative Innovation Center of Quantum Matter, Beijing, 100190, China.

University of Chinese Academy of Sciences, Beijing, 100190, China.

出版信息

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

DOI:10.1038/s41598-017-08394-z
PMID:29101360
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5670247/
Abstract

Recently a new diluted magnetic semiconductor, (Ba,K)(Zn,Mn)As (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.

摘要

最近，一种具有高居里温度的新型稀磁半导体（Ba，K）（Zn，Mn）As（BZA）被发现，它展现出独立的自旋和电荷掺杂机制。这使得BZA成为自旋电子学器件的一种有前景的材料。在本研究中，我们首次报道了成功生长出BZA单晶。基于该BZA单晶制备了一个可用于评估自旋极化的安德烈夫反射结。通过安德烈夫反射光谱分析，获得了BZA单晶66%的自旋极化率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/430e03fcac93/41598_2017_8394_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/136ba6d35bcc/41598_2017_8394_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/6660658e0ca2/41598_2017_8394_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/49230f14544d/41598_2017_8394_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/7373138a37e8/41598_2017_8394_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/430e03fcac93/41598_2017_8394_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/136ba6d35bcc/41598_2017_8394_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/6660658e0ca2/41598_2017_8394_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/49230f14544d/41598_2017_8394_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/7373138a37e8/41598_2017_8394_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ffc/5670247/430e03fcac93/41598_2017_8394_Fig5_HTML.jpg

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