Magnetoelectronic Properties of Perovskite Heterostructures

钙钛矿异质结构的磁电性能

• 批准号: 0509666
• 负责人: Christopher Leighton
• 金额: $ 30万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0509666&HistoricalAwards=false
• 关键词: Magnetoelectronic; Properties; Perovskite; Heterostructures

*** NON-TECHNICAL ABSTRACT ***Despite their enormous range of application, and bewildering variation in design and architecture, current microelectronic devices are based on a single design concept - manipulating electrons by using their charge. The emerging field of spin-electronics promises to revolutionize microelectronics, providing lower power consumptions, increased functionality of current devices and the creation of entirely new electronic devices, by using another intrinsic property of the electron - its spin. This project will employ a variety of oxide materials in the fabrication of a set of structures that provide unique opportunities to tackle fundamental basic science issues that lie in the path of technological progress. In essence, the unique features of the oxide materials will be used to access new physics that is both fundamental and important for technology. The broader impacts of the work are provided by the technological relevance, the potential societal benefits of the development of new electronic devices, and the high level inter-disciplinary approach to the education and training of the graduate and undergraduate students involved in the research. *** TECHNICAL ABSTRACT ***The emerging field of spin-electronics promises to revolutionize microelectronics by using the spin of the electron in addition to its charge. This individual investigator project will utilize multi-functional perovskite oxides in the fabrication of a set of magnetic heterostructures providing access to some of the most important fundamental issues in spin-electronics. These heterostructures, which will be comprised of electron and hole doped perovskites, ferromagnets, insulators and metals, will enable the investigation of electrical control over magnetic properties, bipolar function with high sensitivity to magnetic fields, and electrical control over the electronic ground state. The broader impacts derive from technological relevance, the anticipated broad dissemination of research results, and the high level inter-disciplinary approach to the education of young researchers. The overall goal is the realization of a family of heterostructures with functionality that cannot be accessed in other materials, followed by the use of these structures to elucidate basic unsolved issues in condensed matter physics.

*** 非技术摘要 *** 尽管其应用范围广泛，并且设计和架构上存在令人眼花缭乱的变化，但当前的微电子器件都基于单一的设计概念 - 通过使用电荷来操纵电子。新兴的自旋电子学领域有望通过利用电子的另一种固有属性——自旋，彻底改变微电子学，降低功耗，增强现有设备的功能，并创造全新的电子设备。该项目将采用各种氧化物材料来制造一组结构，为解决技术进步道路上的基础科学问题提供独特的机会。从本质上讲，氧化物材料的独特特征将用于获得对技术既基础又重要的新物理学。这项工作的更广泛影响是由技术相关性、新电子设备开发的潜在社会效益以及参与研究的研究生和本科生的高水平跨学科教育和培训方法提供的。 *** 技术摘要*** 自旋电子学这一新兴领域有望通过利用电子的自旋及其电荷来彻底改变微电子学。这个个人研究人员项目将利用多功能钙钛矿氧化物制造一组磁性异质结构，以解决自旋电子学中一些最重要的基本问题。这些异质结构由电子和空穴掺杂的钙钛矿、铁磁体、绝缘体和金属组成，将能够研究对磁特性的电控制、对磁场高灵敏度的双极功能以及对电子基态的电控制。更广泛的影响源自技术相关性、预期研究成果的广泛传播以及对年轻研究人员的教育的高水平跨学科方法。总体目标是实现一系列具有其他材料无法实现的功能的异质结构，然后使用这些结构来阐明凝聚态物理中未解决的基本问题。