Strong Electronic Correlations in Layered Materials, in Nanoscale Dynamics, and in Actinide Complexes

层状材料、纳米动力学和锕系配合物中的强电子相关性

• 批准号: 0213818
• 负责人: John Marston
• 金额: $ 50.4万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0213818&HistoricalAwards=false
• 关键词: Strong; Electronic; Correlations; Layered; Materials

Sophisticated experimental studies of several classes of layered materials, as well as recent advances in the fabrication and characterization of nanostructures such as quantum dots and wires, require a deeper theoretical understanding of strongly correlated electronic systems. Realistic descriptions of aqueous actinide complexes also require the treatment of strong corelations in ways that go beyond the usual methods of quantum chemistry.This theoretical research will employ a combination of systematic analytical and numerical methods to establish phase diagrams, to study far-from-eqilibrium dynamics, and to study charge-transfer in complex materials. The role of strong electronic correlations will be investigated in three different electronic systems: layered materials such as the cuprate high temperature and organic superconductors, and quantum antiferromagnets; quantum many-body theory far-from-equilibrium as seen recently in the Kondo effect in quantum dots and Luttinger liquid behavior in quantum wires; and, aqueous plutonium complexes as found in nuclear waste.%%%This is a broad-based theoretical program with the common thread that all critically involve electrons which interact strongly. This calls for new and powerful techniques. The problems chosen are diverse and range from the physics of high temperature superconductors to the chemistry of nuclear waste materials.***

对几类层状材料的复杂实验研究，以及量子点和量子线等纳米结构的制造和表征的最新进展，需要对强相关电子系统有更深入的理论理解。 水锕系配合物的现实描述也需要处理强相关的方式，超越了通常的量子化学方法。这个理论研究将采用系统的分析和数值方法相结合，建立相图，研究远离平衡动力学，并研究复杂材料中的电荷转移。 强电子关联的作用将在三个不同的电子系统中进行研究：层状材料，如铜酸盐高温和有机超导体，以及量子反铁磁体;量子多体理论远离平衡，如最近在量子点中的近藤效应和量子线中的Luttinger液体行为中所看到的;以及，在核废料中发现的水钚复合物。这是一个基础广泛的理论计划，其共同点是所有关键都涉及强烈相互作用的电子。 这需要新的和强大的技术。 选择的问题是多种多样的，从高温超导体的物理学到核废料的化学。