School of Physics, Southeast University, Nanjing 211189, China.
Nanoscale. 2018 Sep 27;10(37):18036-18042. doi: 10.1039/c8nr06368k.
Two-dimensional (2D) ferromagnetic semiconductors (FMSs) are desirable for their potential to enhance the functionality of semiconductor devices via the utilization of spin degrees of freedom. Herein, we predict a series of intrinsic FMS monolayers in the chromium sulfide halide CrSX (X = Cl, Br, I) family with large spin polarization, large magnetic moments and high Curie temperatures. Such CrSCl and CrSBr monolayers also have high hole mobilities up to 6.6 × 103 and 5.3 × 103 cm2 V-1 s-1, respectively. Furthermore, these 2D monolayers exhibit excellent dynamic and thermal stabilities and a small exfoliation energy from the bulk. These intrinsic FMSs with their high mobilities may provide competitive candidates for next-generation spintronics and electronics.
二维（2D）铁磁半导体（FMS）有望通过利用自旋自由度来增强半导体器件的功能。在此，我们预测了一系列具有大自旋极化、大磁矩和高居里温度的本征 FMS 单层铬硫化物卤化物 CrSX（X = Cl、Br、I）家族。CrSCl 和 CrSBr 单层的空穴迁移率分别高达 6.6×103 和 5.3×103 cm2 V-1 s-1。此外，这些 2D 单层表现出优异的动力学和热稳定性，以及从体相剥离的小能量。这些具有高迁移率的本征 FMS 可能为下一代自旋电子学和电子学提供有竞争力的候选材料。
