Intersite Coupling and Entropy in Correlated Electron Materials

相关电子材料中的位点耦合和熵

• 批准号: 0801253
• 负责人: Zachary Fisk
• 金额: $ 50万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0801253&HistoricalAwards=false
• 关键词: Intersite; Coupling; Entropy; Correlated; Electron

Non-Technical Abstract: Correlated electron materials have technical importance as functional materials with controllable electrical and magnetic properties. This project will provide a unified understanding, which does not now exist, of the inter-relation of structure and chemistry of such materials with their functional properties, to establish an effective route for the design of improved new functional materials. Undergraduate and graduate students will be trained in crystal growth and characterization of correlated electron materials, and in cross-disciplinary interactions with solid state chemists and in international collaborations.Technical Abstract: The low temperature physics of correlated electron materials is the physics of entropy release from strongly coupled electronic itinerant and local moment degrees of freedom. This project will show how the temperature scale for this release is determined by the structure and chemistry of the materials, establishing a new unified understanding extending from the f- into the transition metal intermetallic compounds, with consequent importance for the design of new functional materials. Graduate and undergraduate students will be trained during this study in the crystal growth and characterization of new intermetallic materials and in cross-disciplinary interactions with solid state chemists and in international collaborations.

摘要：相关电子材料作为一种具有可控电、磁性能的功能材料，具有重要的技术意义。本项目将对这类材料的结构和化学性质与其功能特性之间的相互关系提供一个目前尚不存在的统一认识，为设计改进的新型功能材料建立一条有效的途径。本科生和研究生将学习晶体生长和相关电子材料的表征，以及与固态化学家的跨学科互动和国际合作。技术摘要：相关电子材料的低温物理是强耦合电子流动自由度和局部力矩自由度的熵释放物理。该项目将展示该释放的温标如何由材料的结构和化学决定，建立从f-延伸到过渡金属金属间化合物的新的统一理解，从而对新功能材料的设计具有重要意义。研究生和本科生将在本课程中学习晶体生长和新型金属间材料的表征，以及与固态化学家的跨学科互动和国际合作。