Abstract

The long lasting interest in diluted magnetic semiconductors (DMS) relies on the combination of fundamental science and the potential for spintronics applications. Despite the large body of experimental and theoretical studies carried out in the past decades, there are ongoing controversies about high-T_C ferromagnetic DMS. This paper summarizes the results of the few investigations performed by inelastic neutron scattering, which provides key information for some of the open questions. Emphasis is led on a complete study of the compound Mn_xGa_1 – xN, as well as on novel DMS materials for which the spin injection is decoupled from carrier doping.

中文翻译：

---

高TC铁磁半导体：虚假还是事实？

摘要

对稀释磁半导体（DMS）的长期兴趣取决于基础科学和自旋电子学应用的潜力。尽管在过去几十年中进行了大量的实验和理论研究，但有关高T _C铁磁DMS仍存在争议。本文总结了通过非弹性中子散射进行的少数研究的结果，这些研究为一些悬而未决的问题提供了关键信息。重点是对化合物Mn _x Ga _{1 –  x} N进行了全面研究，并提出了将自旋注入与载流子掺杂分离的新型DMS材料。