Spin Transport in Highly Spin-Polarized Epitaxial Nanostructures

* 技术摘要 * 该奖项支持自旋电子学领域的实验研究。该项目将在两个方面进行。首先，自旋相关的运输相干结构具有可调接口的不连续性将使用变温磁输运测量分析的电和热性能的接口区域和它们的影响修改的自旋电流的材料进行研究。其次，磁振子自旋电流之间的耦合铁磁（FM）和磁性绝缘体（FI）将使用相同的方式进行检查。由于FM/FI接口耦合依赖于与FM/FM耦合根本不同的物理特性，因此其研究代表了一个独特的实验机会。所有样品和器件将采用外延化学气相沉积、磁控溅射和亚微米光刻技术制造。这项研究不仅将推动自旋电子学的理论发展，而且将为下一代基于自旋的电子学提供原型。该项目将为学生提供体验先进的自旋电子学研究的机会，并产生关于新型自旋电子纳米结构的新的基础知识，这些纳米结构可用于开发潜在的革命性设备。非技术摘要 * 该奖项支持自旋电子学领域的实验研究。该项目旨在利用电子自旋的独特方面来探索新的物理现象，并在纳米技术和固态电子器件设计方面产生潜在的革命性进步。这项研究不仅将推动自旋电子学的理论发展，而且将为下一代基于自旋的电子学提供原型。该项目将通过针对高中和初中阶段妇女和少数民族的教育推广活动直接影响当地社区，为这些群体的个人提供亲身体验科学研究的机会。这些个人和研究生将根据这项建议得到资助，将形成美国下一代的自旋电子学研究人员，该项目将产生新的基础知识，新的自旋电子纳米结构，可用于开发潜在的革命性设备，在多个领域广泛实施，包括信息技术，医学和教育。

***Technical Abstract***This award supports experimental research in the field of spintronics. The project will be pursued on two fronts. First, spin-dependent transport in coherent structures possessing tuneable interface discontinuities will be studied using variable-temperature magnetotransport measurements to analyze the electrical and thermal properties of the interface regions and their influence on modified spin current in the material. Second, magnon spin-current coupling between ferromagnetic (FM) and magnetic insulators (FI) will be examined using the same modalities. Since FM/FI interface coupling relies on fundamentally different physics from FM/FM coupling, its study represents a unique experimental opportunity. All samples and devices will be fabricated using epitaxial chemical vapor deposition, magnetron sputtering, and submicron lithography techniques. The proposed research not only will advance the theoretical development of spintronics, but also will serve to prototype the next generations of spin-based electronics. The project will provide students with opportunities to experience advanced spintronics research, and generate new basic knowledge on novel spintronic nanostructures that can be leveraged to develop potentially revolutionary devices.****Non-Technical Abstract****This award supports experimental research in the field of spintronics. The project seeks to exploit the unique aspects of the electron's spin to explore novel physical phenomena and to generate potentially revolutionary advancements in nanotechnology and solid-state electronic device design. The proposed research not only will advance the theoretical development of spintronics, but also will serve to prototype the next generations of spin-based electronics. The project will directly affect the local community via educational outreach activities targeted at women and minorities at the high- and middle-school levels, providing individuals from these groups opportunities to experience scientific research first-hand. These individuals and graduate students that will be funded under this proposal will form the next generation of spintronics researchers in the United States, The project will generate new basic knowledge on novel spintronic nanostructures that can be leveraged to develop potentially revolutionary devices for widespread implementation in multiple arenas including information technology, medicine, and education.