Rashba and Dresselhaus Effects in Hybrid Organic - Inorganic Perovskites: From Basics to Devices
Rashba and Dresselhaus Effects in Hybrid Organic - Inorganic Perovskites: From Basics to Devices
复制标题
DOI：
10.1021/acsnano.5b04409
复制
发表时间：
2015-12-01
期刊：
影响因子：
17.1
通讯作者：
Even, Jacky
中科院分区：
文献类型：
--
作者：
Kepenekian, Mikael;Robles, Roberto;Even, Jacky
我们使用对称性分析、密度泛函理论计算和 k 。 p 建模以检查杂化有机-无机卤化物钙钛矿中的 Rashba 和 Dresselhaus 效应。这些钙钛矿是最近光伏领域革命的中心，但也展示了晶体管和发光器等光电应用的潜力。由于最常用金属的自旋轨道耦合较大，预计它们也将为基于自旋的应用提供有前途的途径。通过深入检查各种系统的电子结构和体晶格对称性，我们分析了二维和三维杂化钙钛矿中自旋分裂的起源。结果表明，由 CH3NH3PbX3 (X = I, Br) 制成的低维纳米结构会导致自旋分裂，这种分裂可以通过施加的电场来控制。这些发现进一步为基于钙钛矿的自旋电子学打开了大门。
We use symmetry analysis, density functional theory calculations, and k . p modeling to scrutinize Rashba and Dresselhaus effects in hybrid organic-inorganic halide perovskites. These perovskites are at the center of a recent revolution in the field of photovoltaics but have also demonstrated potential for optoelectronic applications such as transistors and light emitters. Due to a large spin-orbit coupling of the most frequently used metals, they are also predicted to offer a promising avenue for spin-based applications. With an in-depth inspection of the electronic structures and bulk lattice symmetries of a variety of systems, we analyze the origin of the spin splitting in two- and three-dimensional hybrid perovskites. It is shown that low-dimensional nanostructures made of CH3NH3PbX3 (X = I, Br) lead to spin splittings that can be controlled by an applied electric field. These findings further open the door for a perovskite-based spintronics.