High Magnetic Field Probes of Electronic and Magnetic Structure in Low Dimensional and Correlated Electron Systems

9971474brooks这个实验项目涉及凝聚态物理中至关重要的材料：各向异性导体和超导体，相关电子金属和磁性纳米团簇。在所有情况下，微观机制都对它们的基态行为负责，但即使经过激烈的理论和实验研究，关于这些基态性质的许多悬而未决的问题仍然存在。突出的是低维金属中具有磁场取向的非相干或非费米液体输运；影响金属间化合物中磁性或超导基态的电子结构细节；以及纳米磁体如醋酸锰的簇内磁性机制。在这些研究中，将利用国家强磁场实验室的独特能力。确定电子结构的新方法将被实施，从而将基于磁输运的研究的效用提高到一个新的水平。此外，利用核衰变方法研究纳米磁团簇将对量子级信息存储领域产生潜在影响。将继续大力致力于在与这项研究有关的领域开展教育和提高公众认识，并将继续进行高度的国际合作。在电子和磁性材料中，有时其结构的细微细节决定了其宏观物理性质。这种材料会是磁铁吗？超导体吗?绝缘体吗?这些细节导致了具有科学重要性和潜在应用的材料。本研究项目通过实验研究凝聚态物理的核心材料——各向异性导体和超导体、相关电子金属和磁性纳米团簇。在所有情况下，微观机制都对它们最重要的物理性质负责。在这些研究中，将利用国家高磁场实验室的独特能力，并提出一种解决电子结构确定问题的新方法，该方法一旦实施，将把基于磁电阻的材料表征研究的实用性提高到一个新的水平。磁性研究也对量子水平的信息存储和处理领域有潜在的影响，因为纳米磁体的磁化状态的簇内开关机制将被研究。一个强有力的承诺，包括各级教育外展，并提供优秀的研究生教育机会，其中涉及最先进的仪器。为研究生和博士后提供在工业、政府和学术界从事各种职业的培训。

9971474BrooksThis experimental project addresses materials of central importance in condensed matter physics: anisotropic conductors and superconductors, correlated electronic metals, and magnetic nano-clusters. In all cases microscopic mechanisms are responsible for their ground state behavior, but many open questions about the nature of these ground states remain even after intense theoretical and experimental investigations. Prominent are incoherent or non-Fermi liquid transport with magnetic field orientation in low dimensional metals; the details of electronic structure which influence magnetic or superconducting ground states in intermetallic compounds; and the intra-cluster magnetic mechanisms in nano-magnets such as manganese acetate. In these investigations the unique capabilities of the National High Magnetic Field Laboratory will be utilized. Novel approaches to the determination of electronic structure will be implemented, thereby raising the utility of magneto-transport-based studies to a new level. In addition, studies of nano-magnetic clusters using nuclear decay methods will have a potential impact in the area of information storage at the quantum level. A strong commitment to education and public awareness in areas relevant to this research will be sustained, as will a high degree of international collaboration.%%%In electronic and magnetic materials, sometimes subtle details of their structure determine their macroscopic physical properties. Will the material be a magnet? A superconductor? An insulator? Such details lead to materials of scientific importance and with potential applications. This research project addresses experimentally several classes of materials central to condensed matter physics -anisotropic conductors and superconductors, correlated electronic metals, and magnetic nano-clusters. In all cases microscopic mechanisms are responsible for their most important physical properties. In these investigations the unique capabilities of the National High Magnetic Field Laboratory will be utilized, and a novel approach to the problem of electronic structure determination is proposed, which when implemented, will raise the utility of magnetoresistance-based studies for the characterization of materials to a new level. The magnetic studies too, have a potential impact in the area of information storage and processing at the quantum level, since intra-cluster switching mechanisms of the magnetization states in nano-magnets will be studied. A strong commitment is made to include educational outreach at all levels, and to provide outstanding graduate education opportunities which involve state-of-the-art instruments. Graduate students and post-doctoral associates are provided with training for a range of careers in industry, government and academe.