(Ca,K)(Zn,Mn)2As2: Ferromagnetic semiconductor induced by decoupled charge and spin doping in CaZn2As2 |
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| Jinou Dong, Xueqin Zhao, Licheng Fu, Yilun Gu, Rufei Zhang, Qiaolin Yang, Lingfeng Xie, Fanlong Ning. (Ca,K)(Zn,Mn)2As2: Ferromagnetic semiconductor induced by decoupled charge and spin doping in CaZn2As2[J]. Journal of Semiconductors, 2022, 43(7): 072501. doi: 10.1088/1674-4926/43/7/072501 J O Dong, X Q Zhao, L C Fu, Y L Gu, R F Zhang, Q L Yang, L F Xie, F L Ning. (Ca,K)(Zn,Mn)2As2: Ferromagnetic semiconductor induced by decoupled charge and spin doping in CaZn2As2[J]. J. Semicond, 2022, 43(7): 072501. doi: 10.1088/1674-4926/43/7/072501Export: BibTex EndNote |
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| Authors: | Jinou Dong Xueqin Zhao Licheng Fu Yilun Gu Rufei Zhang Qiaolin Yang Lingfeng Xie Fanlong Ning |
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| Affiliation: | 1. Zhejiang Province Key Laboratory of Quantum Technology and Device and Department of Physics, Zhejiang University, Hangzhou 310027, China;2. Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;3. State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | We have successfully synthesized a novel diluted magnetic semiconductor (Ca1−2xK2x)(Zn1−xMnx)2As2 with decoupled charge and spin doping. The substitutions of (Ca2+, K+) and (Zn2+, Mn2+) in the parent compound CaZn2As2 (space group Pbegin{document}${overline 3}$end{document}![]() ![]() m1 (No. 164)) introduce carriers and magnetic moments, respectively. Doping only Mn into CaZn2As2 does not induce any type of long range magnetic ordering. The ferromagnetic ordering arise can only when K+ and Mn2+ are simultaneously doped. The resulted maximum Curie temperature reaches ~7 K, and the corresponding coercive field is ~60 Oe. The transport measurements confirm that samples with K and Mn co-doping still behave like a semiconductor. |
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| Keywords: | CaZn2As2 ferromagnetic ordering Curie temperature diluted magnetic semiconductor |
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