Magnetic properties of Mn-doped InSb nanowires from first principles

被引：1
作者：
Zhang, Yong [1 ]
Xie, Zhong-Xiang [1 ]
Deng, Yuan-Xiang [1 ]
Yu, Xia [1 ]
Zhang, Li-Ke [1 ]
Chen, Shi-Zhang [2 ]
Ning, Feng [3 ]
机构：
[1] Hunan Inst Technol, Sch Sci, Hengyang 421002, Peoples R China
[2] South China Agr Univ, Coll Elect Engn, Guangzhou 510642, Peoples R China
[3] Nanning Normal Univ, Coll Phys & Elect Engn, Nanning 530001, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2024年 / 11卷 / 01期
基金：
中国国家自然科学基金;
关键词：
diluted magnetic semiconductors; nanowires; ferromagnetism; first-principles calculations; FERROMAGNETISM; IN1-XMNXSB; MANGANESE;
D O I：
10.1088/2053-1591/ad1e0d
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Room-temperature ferromagnetism (RTFM) has been achieved in Mn-doped InSb nanowires (NWs) through experiment. However, the underlying cause of RTFM remains unclear. In this paper, using first-principles calculations, the distribution of Mn ions and magnetic properties of Mn-doped wurtzite and zinc blend InSb NWs have been investigated. Our results indicate that wurtzite (In,Mn)Sb NWs can exhibit superior ferromagnetic behavior compared to zinc blend (In,Mn)Sb NWs. The distribution of Mn ions and magnetic properties in the (In,Mn)Sb NWs is influenced by their size, surface passivation and crystal structure. Furthermore, the ferromagnetic coupling is short-range in passivated (In,Mn)Sb NWs, and as the size of the NW decreases, the Mn-3d level becomes a deep acceptor in the band gap, resulting in an enhancement of ferromagnetism.
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页数：9
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