Mahdavifar Maryam, Khoeini Farhad
Department of Physics, University of Zanjan, PO Box 45195-313, Zanjan, Iran.
Nanotechnology. 2018 Aug 10;29(32):325203. doi: 10.1088/1361-6528/aac66f. Epub 2018 May 21.
We report peculiar charge and spin transport properties in S-shaped silicene junctions with the Kane-Mele tight-binding model. In this work, we investigate the effects of electric and exchange fields on the charge and spin transport properties. Our results show that by applying a perpendicular electric field, metal-semiconductor and also semimetal-semiconductor phase transitions occur in our systems. Furthermore, full spin current can be obtained in the structures, so the half-metallic states are observable. Our results enable us to control charge and spin currents and provide new opportunities and applications in silicene-based electronics, optoelectronics, and spintronics.
我们利用Kane-Mele紧束缚模型报道了S形硅烯结中奇特的电荷和自旋输运性质。在这项工作中，我们研究了电场和交换场对电荷和自旋输运性质的影响。我们的结果表明，通过施加垂直电场，我们的系统中会发生金属-半导体以及半金属-半导体相变。此外，在这些结构中可以获得完全自旋电流，因此半金属态是可观测的。我们的结果使我们能够控制电荷和自旋电流，并为基于硅烯的电子学、光电子学和自旋电子学提供新的机遇和应用。
