Fully spin-polarized current in gated bilayer silicene
Fully spin-polarized current in gated bilayer silicene
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门控双层硅烯中的完全自旋极化电流
DOI：
10.1103/physrevb.98.075435
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发表时间：
2018-08-28
影响因子：
3.7
通讯作者：
Zhang, Yu-Zhong
中科院分区：
文献类型：
--
作者：
Ouyang, Xiao-Fang;Song, Ze-Yi;Zhang, Yu-Zhong
通过密度泛函理论计算，我们预测了双层硅烯在一定层间距下的基态可以是反铁磁的。在小的电子或空穴掺杂下，它在施加的面外电场下变成半金属，这可以用于产生完全自旋极化的场效应驱动电流，即使在没有外部磁场、铁磁衬底、掺杂的磁性离子或自旋轨道耦合的情况下。我们的发现为克服自旋电子学的主要挑战指出了一条新的途径。
By applying density functional theory calculations, we predict that the groundstate of bilayer silicene at certain interlayer distances can be antiferromagnetic. At small electron or hole doping, it becomes half metallic under applied out-of-plane electric field, which can be used to produce fully spin-polarized field-effect-driven current even in the absence of external magnetic field, ferromagnetic substrates, doped magnetic ions, or spin-orbital coupling. Our finding points out a new route to overcome the major challenge of spintronics.