Nanoscale Magnetism and Spintronics

纳米磁学和自旋电子学

• 批准号: 0306711
• 负责人: Gang Xiao
• 金额: $ 33万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0306711&HistoricalAwards=false
• 关键词: Nanoscale; Magnetism; Spintronics

We propose to investigate nanoscale magnetism and spintronics, in particular, systems of controlled self-assembled nanostructures. The objective is to investigate and solve outstanding physics problems that are both basic and essential to applications. We will develop a reliable fabrication process leading to excellent self-assembled nanostructures. We will explore magnetotransport in embedded nanocrystals lattices, in particular, the properties of magnetoresistance (MR) and extraordinary Hall effect (EHE). These systems may offer enhanced magnetotransport properties. The subject of magnetic interactions will be studied with the purposes of engineering magnetic switching fields and achieving large MR and EHE at low magnetic fields. These projects will lead to a more comprehensive understanding of properties of nanoscale magnetic systems. Nanoscale spintronics is important to the future competitiveness of the semiconductor industry in the United States. Our project will support graduate students. We will continue to recruit undergraduates and high school students to experience the wonder of the small world.%%%We propose to investigate magnets and quantum spin dependent phenemena in nanometer sized magnets assembled in arrays through self-assembly processes and embedded in metals. In these new systems, many physical properties defy interpretations using traditional theoritical understanding. Our research is designed to foster better understanding of the physics involved and to develop a reliable fabrication process leading to excellent self-assembled nanostructures. The electrical properties of these embedded nanocrystals such as magnetoresistance (MR) and extraordinary Hall effect (EHE) will be measured. These systems are likely to offer enhanced magnetotransport properties. The research will benefit the high-tech industries to overcome roadblocks, which impede the advancement toward smaller, thinner, faster, and cost-effective devices. Our project will support graduate students. We will continue to recruit undergraduates and high school students to experience the wonder of the small world. ***

我们建议研究纳米尺度的磁性和自旋电子学，特别是可控自组装纳米结构系统。其目的是研究和解决对应用既基本又必要的突出物理问题。我们将开发一种可靠的制造工艺，从而实现出色的自组装纳米结构。我们将探索嵌入纳米晶格中的磁输运，特别是磁阻(MR)和反常霍尔效应(EHE)的性质。这些系统可以提供增强的磁传输特性。将研究磁相互作用的主题，目的是设计磁开关场并在低磁场下实现大的MR和EHE。这些项目将使人们更全面地了解纳米级磁性系统的性质。纳米级自旋电子学对美国半导体行业未来的竞争力非常重要。我们的项目将支持研究生。我们将继续招收本科生和高中生来体验小世界的奇迹。%我们建议研究通过自组装过程组装成阵列并嵌入金属中的纳米磁体中的磁体和量子自旋相关的菲涅纳。在这些新系统中，许多物理性质无法用传统的理论理解来解释。我们的研究旨在促进对相关物理的更好理解，并开发一种可靠的制造工艺，从而实现出色的自组装纳米结构。将测量这些嵌入纳米晶体的电学性质，如磁阻(MR)和超常霍尔效应(EHE)。这些系统可能会提供增强的磁传输特性。这项研究将有利于高科技行业克服障碍，这些障碍阻碍了向更小、更薄、更快和低成本设备的发展。我们的项目将支持研究生。我们将继续招收本科生和高中生，体验小世界的奇迹。***