Presidential Faculty Fellows

总统教职研究员

• 批准号: 9453362
• 负责人: Collin Broholm
• 金额: $ 50万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-10-01 至 1999-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9453362&HistoricalAwards=false
• 关键词: Presidential; Faculty; Fellows

94-53362 Broholm This Presidential Faculty Fellow award will support a project involving neutron diffraction investigations of quantum phenomena in condensed matter systems. The project has a strong educational component which involves both undergraduate and graduate students in the research. The research addresses structural and magnetic order in so-called quantum disordered solids that only exhibit a magnetic phase transition in the limit of zero temperature. The systems include one-dimensional linear chains, two-dimensional antiferromagnetic sheets, heavy-Fermion metals and transition- metal oxides. The research is of considerable fundamental interest, but has potential technological importance since it may shed light on related fields such as high temperature superconductivity. This Presidential Faculty Fellow award will support a project to study magnetism and electrical properties of materials which exhibit quantum effects. The project has a strong educational component which involves both undergraduate and graduate students in the research. The research seeks to study phase transitions that only emerge as the materials reach "absolute zero". This can be contrasted with non-quantum materials such as ice that undergoes an ordinary phase transition, melting a 32 F. The systems include linear chains or two-dimensional arrays of magnetic atoms, complex metal alloys and transition-metal oxides. The research is of considerable fundamental interest, but has potential technological importance since it may shed light on related fields such as high temperature superconductivity.

94-53362布罗霍姆这一总统学院院士奖将支持一个项目，该项目涉及对凝聚态系统中量子现象的中子衍射研究。该项目有很强的教育成分，本科生和研究生都参与了研究。这项研究解决了所谓的量子无序固体的结构和磁性有序问题，这种无序固体只在零温度范围内表现出磁性相变。这些体系包括一维线性链、二维反铁磁片、重费米子金属和过渡金属氧化物。这项研究具有相当大的基础兴趣，但具有潜在的技术重要性，因为它可能有助于揭示高温超导等相关领域。总统学院院士奖将支持一个研究具有量子效应的材料的磁性和电学性质的项目。该项目有很强的教育成分，本科生和研究生都参与了研究。这项研究试图研究只有当材料达到“绝对零度”时才会出现的相变。这可以与非量子材料形成对比，例如经历普通相变的冰，熔化温度为32华氏度。这些系统包括磁性原子的线性链或二维阵列、复杂的金属合金和过渡金属氧化物。这项研究具有相当大的基础兴趣，但具有潜在的技术重要性，因为它可能有助于揭示高温超导等相关领域。