Anomalous Temperature Dependence of Magnetic Properties in Mn-doped ZnSnAs2 Epitaxial Thin Films

被引：0
作者：
Hidaka, Shiro [1 ]
Toyota, Hideyuki [1 ]
Uchitomi, Naotatka [1 ]
机构：
[1] Nagaoka Univ Tech, Nagaoka Univ Technol, Dept Elect Engn, 1603-1 Kamitomioka Cho, Nagaoka, Niigata 9402188, Japan
来源：
2016 COMPOUND SEMICONDUCTOR WEEK (CSW) INCLUDES 28TH INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE & RELATED MATERIALS (IPRM) & 43RD INTERNATIONAL SYMPOSIUM ON COMPOUND SEMICONDUCTORS (ISCS) | 2016年
关键词：
Semiconductor spintronics; Ferromagnetic; Antiferromagnetic; ZnSnAs2;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We have observed anomalous temperature dependence of magnetization of ZnSnAs2: Mn epitaxial thin films grown on InP(001) substrates compared with the values estimated by the meanfield theory using S = 5/2, as a function of temperature: The ZnSnAs2:Mn epitaxial thin films exhibits slightly increasing magnetization with rising temperature. From the first-principles calculation, when Mn substitutes for neighboring Zn sites in ZnSnAs2, Mn-Zn-Mn-Zn pairs result, which prefer antiferromagnetic (AFM) ordering. On the other hand, Mn-Zn-Mn-Sn and Mn-Sn-Mn-Sn pairs can introduce both holes and spins, leading to ferromagnetic (FM) ordering. Thus, assuming that the magnetic property of ferromagnetic phase follows the mean-field theory, it can be explained by coexistence of FM and AFM phases.
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页数：2
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