Rashba自旋轨道耦合下石墨烯/镍（111）衬底的自旋和电荷分布
Spin and charge distributions in Graphene/Nickel (111) substrate under Rashba spin-orbital coupling
摘要：
为了理解Rashba自旋轨道相互作用和铁磁邻近效应之间的耦合因子，我们设计了一个Monte Carlo算法来模拟室温Rashba材料石墨烯/镍（111）衬底在有限温度下的自旋和电荷分布。我们观察到，汇率波动率是在石墨烯中产生巨大的Rashba自旋轨道分裂的关键因素。更重要的是，我们监测Rashba自旋分裂现象，自旋极化电子可能会从两个相对的边缘时，加热逃逸。然而，逃逸电子在内部区域呈现高斯分布，这对于自旋电子学工程师优化自旋态探测效率是重要的。此外，我们研究了我们的Monte Carlo模型是否可以解释为什么在石墨烯/镍（111）衬底实验观察到室温Rashba效应。所有结果均以物理单位表示。
英文摘要：
To understand the coupling factor between Rashba spin-orbital interaction and ferromagnetic proximity effect, we design a Monte Carlo algorithm to simulate the spin and charge distributions for the room-temperature Rashba material, Graphene/Nickel(111) substrate, at finite temperature. We observe that the rate of exchange fluctuation is a key player to produce giant Rashba spin-orbit splitting in graphene. More importantly, we monitor the Rashba spin-splitting phenomenon where the spin-polarized electrons may be escaped from two opposite edges upon heating. However, the escaped electrons show Gaussian-like distribution in interior area that is important for spintronic engineers to optimize the efficiency of spin-state detection. In addition, we investigate if our Monte Carlo model can explain why room-temperature Rashba effect is observed in Graphene/Nickel(111) substrate experimentally. All results are presented in physical units.
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