Switchable fermi surface sheets in greigite
Switchable fermi surface sheets in greigite
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DOI：
10.1103/physrevb.86.020406
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发表时间：
2012-07
影响因子：
3.7
通讯作者：
Baomin Zhang;G. D. Wijs;D. Groot
中科院分区：
文献类型：
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作者：
Baomin Zhang;G. D. Wijs;D. Groot
闪锌矿(Fe3S4)和磁铁矿(Fe3O4)是具有不同性质的等结构和等电子亚铁磁体。电子结构计算表明，云母是一种普通金属，而不是半金属磁铁矿。闪锌矿显示出一种受相对论效应独特影响的复杂费米面：费米面片的存在取决于磁化方向。这使得自旋轨道电子学和自旋电子学在单一化合物而不是设备的水平上得以实现。由于它的相对论起源，自旋污染在自旋轨道电子学中是无关紧要的，整个元素周期表都可以进行优化。
Greigite (Fe3S4) and magnetite (Fe3O4) are isostructural and isoelectronic ferrimagnets with quite distinct properties. Electronic structure calculations reveal greigite is a normalmetal in contrast to half-metallic magnetite. Greigite shows a complex Fermi surface with a unique influence of relativistic effects: The existence of sheets of the Fermi surface depends on the direction of the magnetization. This enables spinorbitronics, spintronics on the level of a single compound rather than a device. Due to its relativistic origin, spin contamination is irrelevant in spinorbitronics and the entire periodic table is available for optimizations.