(Ca,K)(Zn,Mn)_(2)As_(2):Ferromagnetic semiconductor induced by decoupled charge and spin doping in CaZn_(2)As_(2)  

作　　者：Jinou Dong Xueqin Zhao Licheng Fu Yilun Gu Rufei Zhang Qiaolin Yang Lingfeng Xie Fanlong Ning 

机构地区：[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

出　　处：《Journal of Semiconductors》2022年第7期78-83,共6页半导体学报（英文版）

基　　金：supported by the Key R&D Program of Zhejiang Province, China (2021C01002);NSF of China (No. 12074333)。

摘　　要：We have successfully synthesized a novel diluted magnetic semiconductor(Ca_(1−2x)K_(2x))(Zn_(1−x)Mn_(x))_(2)As_(2) with decoupled charge and spin doping.The substitutions of(Ca^(2+),K^(+))and(Zn^(2+),Mn^(2+))in the parent compound CaZn_(2)As_(2)(space group P m1(No.164))introduce carriers and magnetic moments,respectively.Doping only Mn into CaZn_(2)As_(2) does not induce any type of long range magnetic ordering.The ferromagnetic ordering arise can only when K^(+)and Mn^(2+)are simultaneously doped.The res-ulted 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.

关 键 词：CaZn_(2)As_(2) ferromagnetic ordering Curie temperature diluted magnetic semiconductor 

分 类 号：O469[理学—凝聚态物理]