Strain Controlled Ferromagnetic-Antiferromagnetic Transformation in Mn-Doped Silicene for Information Transformation Devices
Strain Controlled Ferromagnetic-Antiferromagnetic Transformation in Mn-Doped Silicene for Information Transformation Devices
复制标题
用于信息转换器件的锰掺杂硅烯中应变控制的铁磁-反铁磁转变
DOI：
10.1021/acs.jpclett.7b00115
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发表时间：
2017-04-06
影响因子：
5.7
通讯作者：
Liu, Wei
中科院分区：
文献类型：
--
作者：
Li, Shuang;Ao, Zhimin;Liu, Wei
磁状态的可靠控制是使用磁性纳米结构的核心。在这里，通过使用最先进的密度泛函理论计算，我们发现锰原子修饰的硅烯具有一个非常固定的磁矩和一个高的居里温度。此外，在双轴应变作用下，Mn-硅烯体系实现了可调的磁交换耦合，诱导了铁磁（FM）态向反铁磁（AFM）态的转变.因此，一旦FM和AFM状态被称为“1”和“0”，就可以通过叠加应变场来获得原子“位”。这种将机械能转化为磁矩的压电自旋纳米器件将为未来的信息传输提供巨大的潜力，因为它们最终结合了小尺寸，高速运行和低功耗的联合收割机。
A reliable control of magnetic states is central to the use of magnetic nanostructures. Here, by using state-of-the-art density-functional theory calculations, we find that Mn atoms decorated silicene has an anomalously fixed magnetic moment and a high Curie temperature. In addition, a tunable magnetic exchange coupling is achieved for Mn-silicene system with the application of biaxial strain, which induces a transformation from the ferromagnetic (FM) to the antiferromagnetic (AFM) state. As such, an atomic "bit" could be obtained by superimposing strain field once the FM and AFM states are referred to as "1" and "0". Such piezospin nanodevices, which convert mechanical energy into magnetic moment, would offer great potential for future information transmission, as they ultimately combine small size, high-speed operation, and low-power consumption.