中国物理B ›› 2018, Vol. 27 ›› Issue (9): 97502-097502.doi: 10.1088/1674-1056/27/9/097502

所属专题: TOPICAL REVIEW — Spin manipulation in solids

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Progress of novel diluted ferromagnetic semiconductors with decoupled spin and charge doping: Counterparts of Fe-based superconductors

Shengli Guo(郭胜利), Fanlong Ning(宁凡龙)   

  1. Department of Physics, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2018-05-01 修回日期:2018-06-06 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: Fanlong Ning E-mail:ningfl@zju.edu.cn
  • 基金资助:

    Project supported by the Chinese Ministry of Science and Technology (Grant No. 2016YFA0300402), the National Natural Science Foundation of China (Grant No. 11574265), the Natural Science Foundation of Zhejiang Province, China (Grant Nos. LR15A040001 and LY14A040007), and the Fundamental Research Funds for the Central Universities, China.

Progress of novel diluted ferromagnetic semiconductors with decoupled spin and charge doping: Counterparts of Fe-based superconductors

Shengli Guo(郭胜利), Fanlong Ning(宁凡龙)   

  1. Department of Physics, Zhejiang University, Hangzhou 310027, China
  • Received:2018-05-01 Revised:2018-06-06 Online:2018-09-05 Published:2018-09-05
  • Contact: Fanlong Ning E-mail:ningfl@zju.edu.cn
  • Supported by:

    Project supported by the Chinese Ministry of Science and Technology (Grant No. 2016YFA0300402), the National Natural Science Foundation of China (Grant No. 11574265), the Natural Science Foundation of Zhejiang Province, China (Grant Nos. LR15A040001 and LY14A040007), and the Fundamental Research Funds for the Central Universities, China.

摘要:

Diluted ferromagnetic semiconductors (DMSs) that combine the properties of semiconductors with ferromagnetism have potential application in spin-sensitive electronic (spintronic) devices. The search for DMS materials exploded after the observation of ferromagnetic ordering in Ⅲ-V (Ga,Mn)As films. Recently, a series of DMS compounds isostructural to iron-based superconductors have been reported. Among them, the highest Curie temperature TC of 230 K has been achieved in (Ba,K)(Zn,Mn)2As2. However, most DMSs, including (Ga,Mn)As, are p-type, i.e., the carriers that mediate the ferromagnetism are holes. For practical applications, DMSs with n-type carriers are also advantageous. Very recently, a new DMS Ba(Zn,Co)2As2 with n-type carriers has been synthesized. Here we summarize the recent progress on this research stream. We will show that the homogeneous ferromagnetism in these bulk form DMSs has been confirmed by microscopic techniques, i.e., nuclear magnetic resonance (NMR) and muon spin rotation (μSR).

关键词: diluted ferromagnetic semiconductors, homogenous ferromagnetism, muon spin rotation (μSR), nuclear magnetic resonance (NMR)

Abstract:

Diluted ferromagnetic semiconductors (DMSs) that combine the properties of semiconductors with ferromagnetism have potential application in spin-sensitive electronic (spintronic) devices. The search for DMS materials exploded after the observation of ferromagnetic ordering in Ⅲ-V (Ga,Mn)As films. Recently, a series of DMS compounds isostructural to iron-based superconductors have been reported. Among them, the highest Curie temperature TC of 230 K has been achieved in (Ba,K)(Zn,Mn)2As2. However, most DMSs, including (Ga,Mn)As, are p-type, i.e., the carriers that mediate the ferromagnetism are holes. For practical applications, DMSs with n-type carriers are also advantageous. Very recently, a new DMS Ba(Zn,Co)2As2 with n-type carriers has been synthesized. Here we summarize the recent progress on this research stream. We will show that the homogeneous ferromagnetism in these bulk form DMSs has been confirmed by microscopic techniques, i.e., nuclear magnetic resonance (NMR) and muon spin rotation (μSR).

Key words: diluted ferromagnetic semiconductors, homogenous ferromagnetism, muon spin rotation (μSR), nuclear magnetic resonance (NMR)

中图分类号:  (Magnetic semiconductors)

  • 75.50.Pp
76.75.+i (Muon spin rotation and relaxation) 75.50.Lk (Spin glasses and other random magnets) 77.80.B- (Phase transitions and Curie point)