We show that doped cubic iron pyrite, which is a diamagnetic semiconductor, becomes ferromagnetic when $p$-type doped. We furthermore find that this material can exhibit high spin polarization both for tunneling and transport devices. These results are based on first-principles electronic structure and transport calculations. This illustrates the use of $p$-type doping without magnetic impurities as a strategy for obtaining ferromagnetic semiconducting behavior, with implications for spintronic applications that require both magnetic ordering and good mobility. This is a combination that has been difficult to achieve by doping semiconductors with magnetic impurities. We show that phosphorus and arsenic may be effective dopants for achieving this behavior.

中文翻译：

---

通过低水平非磁性掺杂实现具有移动载流子的半导体中的铁磁性

我们表明，掺杂的立方黄铁矿是一种反磁性半导体，当 $p$型掺杂。我们进一步发现，该材料对于隧道和传输装置都可以表现出高自旋极化。这些结果基于第一性原理的电子结构和运输计算。这说明了$p$无磁性杂质的高掺杂类型作为获得铁磁半导体行为的策略，对于同时需要磁性有序性和良好迁移率的自旋电子学应用产生了影响。这种组合很难通过用磁性杂质掺杂半导体来实现。我们表明，磷和砷可能是实现此行为的有效掺杂剂。