Crystal Growth and Neutron Scattering Studies of Complex Oxides

复合氧化物的晶体生长和中子散射研究

• 批准号: 1006617
• 负责人: Martin Greven
• 金额: $ 37.5万
• 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: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1006617&HistoricalAwards=false
• 关键词: Crystal; Growth; Neutron; Scattering; Studies

****NON-TECHNICAL ABSTRACT****Complex oxide materials offer myriad opportunities to discover and learn about novel fundamental magnetic and electronic phenomena and phases relevant to both fundamental science and technology. This award supports a project that will address some of the most timely and intellectually challenging scientific issues in this field by pursuing advanced crystal growth and neutron scattering studies of a number materials that are likely to hold the key to resolving such timely questions as: the role of disorder in model quantum magnets; why the temperature where a material becomes a superconductor is very high in some materials, but not in others; the roles of coexisting and competing phases and of magnetic excitations. A comprehensive approach will be pursued through collaborations with experts using complementary experimental tools. This effort covers the full range from crystal growth, to materials characterization, to neutron scattering, to extensive collaborations. Consequently, this materials-based research program will provide rich educational opportunities in materials physics.****TECHNICAL ABSTRACT****This individual investigator award supports a project that will investigate some of the most timely topics in the field of correlated-electron materials by pursuing crystal growth and neutron scattering studies of a number of complex oxides that are likely to hold the key to resolving such timely questions as: the role of disorder in model quantum magnets; the fundamental differences between electron and hole doping of the high transition-temperature (Tc) cuprate superconductors; why Tc is very high in some cuprates, but not in others; the roles of coexisting and competing phases and of magnetic excitations. A comprehensive approach will be pursued through collaborations with experts using complementary experimental tools. This effort covers the full range from crystal growth, to materials characterization, to neutron scattering, to extensive collaborations. Consequently, this materials-based research program will provide rich educational opportunities in materials physics.

****非技术摘要****复杂的氧化物材料提供了无数的机会来发现和了解与基础科学和技术相关的新颖的基本磁和电子现象以及相。 该奖项支持一个项目，该项目将通过对多种材料进行先进的晶体生长和中子散射研究来解决该领域中一些最及时和最具智力挑战性的科学问题，这些材料可能是解决此类及时问题的关键，例如：无序在模型量子磁体中的作用；为什么某些材料成为超导体的温度非常高，而另一些材料则不然；共存相和竞争相以及磁激励的作用。 将通过与专家合作使用互补的实验工具来寻求一种全面的方法。 这项工作涵盖了从晶体生长、材料表征、中子散射到广泛合作的各个领域。 因此，这个基于材料的研究项目将为材料物理学提供丰富的教育机会。****技术摘要****这个个人研究员奖支持一个项目，该项目将通过对许多复杂氧化物进行晶体生长和中子散射研究来研究相关电子材料领域中一些最及时的主题，这些研究可能是解决诸如模型量子磁体中无序的作用等及时问题的关键；高转变温度（Tc）铜酸盐超导体的电子和空穴掺杂之间的根本区别；为什么某些铜氧化物的 Tc 非常高，而另一些则不然；共存相和竞争相以及磁激励的作用。 将通过与专家合作使用互补的实验工具来寻求一种全面的方法。 这项工作涵盖了从晶体生长、材料表征、中子散射到广泛合作的各个领域。 因此，这个基于材料的研究项目将为材料物理学提供丰富的教育机会。