基于自旋轨道耦合和超精细相互作用的有机磁效应理论研究

项目名称： 基于自旋轨道耦合和超精细相互作用的有机磁效应理论研究

项目编号： No.11304268

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 姜虹

作者单位： 烟台大学

项目金额： 25万元

中文摘要： 有机自旋电子学是当前非常活跃的研究领域，有机磁效应的产生机制一直是该领域的研究热点。有观点认为自旋轨道耦合和氢核超精细相互作用可能是产生有机磁效应的原因，但目前关于这方面的定量研究还相对较少。本项目将基于量子输运图像，系统地研究自旋相关的相互作用对有机材料基本性质及其器件输运性质的影响，具体内容包括：考虑自旋轨道耦合和氢核超精细相互作用的影响，研究有机小分子材料中载流子的自旋极化及其在外场下的动力学弛豫过程；构造有机功能器件模型，拓展二流体模型下的格林函数公式和朗道输运理论，计算磁电阻。该项目的实施对于理解有机磁效应的物理机制具有重要的理论意义，对外场调制的有机功能器件的开发与应用具有指导意义，有助于推动有机自旋电子学领域的发展。

中文关键词： 有机自旋电子学；自旋-轨道耦合；自旋极化；；

英文摘要： Organic spintronics has attracted much attention of scientific community due to their intriguing mechanism of organic magnetic effect. The organic magnetic effect may relate to the spin-related interaction which originates from the spin-orbit coupling or hyperfine interaction caused by hydrogen nuclei etc.; however, there have been very few quantitative researches by far. Based on quantum transport picture, this proposed project will systematically investigate the effect of spin-related interaction on the basic properties of orgnic materials and the spin-dependent transport in organic functional devices. The detailed contents are shown as the following: study the spin polarization and dynamical relaxation process of carriers in organic small molecule materials considering the spin-orbit coupling and hyperfine interaction separately, build the model of organic functional devices, expand Green's function fomula and Landauer-Büttiker transport theory under two-current model and calculate the magnetoresistance. The proposed project would have great theoretical significance for comprehending the mechanism of organic magnetic effect, guide the development and application of organic funtional device, and promote the development of organic spintronics.

英文关键词： organic spintronics；spin-orbit coupling；spin polarization；；