Spin Transport in Highly Spin-Polarized Epitaxial Nanostructures

高度自旋极化外延纳米结构中的自旋输运

• 批准号: 1307056
• 负责人: Gang Xiao
• 金额: $ 42万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-06-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1307056&HistoricalAwards=false
• 关键词: Spin; Transport; Highly; Polarized; Epitaxial

***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.

***技术摘要***该奖项支持自旋电子学领域的实验研究。该项目将从两个方面着手。首先，在具有可调谐界面不连续的相干结构中，将使用变温磁输运测量来研究自旋相关输运，以分析界面区域的电学和热性质及其对材料中修饰自旋电流的影响。其次，铁磁（FM）和磁绝缘体（FI）之间的磁振子自旋电流耦合将使用相同的模式进行检查。由于调频/FI界面耦合依赖于与调频/调频耦合根本不同的物理原理，因此其研究代表了一个独特的实验机会。所有样品和器件将使用外延化学气相沉积，磁控溅射和亚微米光刻技术制造。所提出的研究不仅将推动自旋电子学的理论发展，而且将有助于下一代自旋电子学的原型。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基础知识，这些知识可以用来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设备设计方面产生潜在的革命性进步。所提出的研究不仅将推动自旋电子学的理论发展，而且将有助于下一代自旋电子学的原型。该项目将通过在高中和初中阶段针对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。该项目将产生新的自旋电子纳米结构的基础知识，可用于开发潜在的革命性设备，广泛应用于包括信息技术、医学和教育在内的多个领域。