IMR: Acquisition of a High Magnetic Field Dilution Refrigerator System for Materials Research and Education

IMR：采购用于材料研究和教育的高磁场稀释制冷系统

• 批准号: 0526775
• 负责人: Vesna Mitrovic
• 金额: $ 28.09万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0526775&HistoricalAwards=false
• 关键词: IMR; Acquisition; Magnetic; Field; Dilution

Funds are requested for the acquisition of an integrated high homogeneity magnet and dilution refrigerator system with radio frequency components for research of quantum phenomena and student training at Brown University. This system will be used to study the microscopic properties of quantum magnets, novel highly correlated electron systems including unconventional superconductors, and metal doped with paramagnetic ions (for applications to high energy detectors). The radio frequency components will be optimized for magnetic resonance applications. NMR as a low energy probe has the potential to provide crucial information about the ground state of the system. The study of the ground state and its behavior in a magnetic field puts important constraints on the theoretical understanding of Condensed Matter systems. Understanding novel quantum effects in electronic and magnetic materials may lead to technological advances. A group of experimentalists at Brown University and their collaborators at other institutions conduct research at the frontier of fundamental material properties. Many of their research projects require a combined low temperature and high magnetic field environment. The requested system will greatly increase significance and productivity of their research and open up new and exciting research directions. Furthermore, it will have a major impact graduate and undergraduate education at Brown.This grant provides funds for the acquisition of a state-of-the-art dilution refrigerator and magnet system, allowing the access to the near absolute-zero temperature and high magnetic field environment. Ultra low temperature conditions are essential in revealing the quantum nature of novel electronic materials. A strong magnetic field in these low temperature conditions can be effectively used to manipulate the quantum states in such systems. Non-invasive microscopic techniques such as magnetic resonance (successfully used for medical imaging as well) can be very powerful in elucidating nature of these new states of matter. A group of experimentalists at Brown University and their collaborators at other institutions conduct research at the frontier of fundamental material properties. Many of their research projects require combined low temperature and magnetic field environment. The requested system will greatly increase significance and productivity of their research and open up new exciting research directions. Furthermore, it will have a major impact on graduate and undergraduate education at Brown.

要求提供资金，用于购买一个带有射频部件的高均匀性磁体和稀释制冷机一体化系统，用于布朗大学的量子现象研究和学生培训。该系统将用于研究量子磁体的微观特性，包括非常规超导体在内的新型高度相关电子系统，以及掺杂顺磁离子的金属（用于高能探测器）。射频组件将针对磁共振应用进行优化。核磁共振作为一种低能探针，有可能提供有关系统基态的重要信息。对基态及其在磁场中的行为的研究对凝聚态系统的理论理解提出了重要的限制。了解电子和磁性材料中的新量子效应可能会导致技术进步。布朗大学的一组实验学家和他们在其他机构的合作者在基本材料特性的前沿进行研究。他们的许多研究项目都需要低温和高磁场环境。所要求的系统将大大提高他们的研究的意义和生产力，并开辟新的和令人兴奋的研究方向。此外，它将对布朗大学的研究生和本科生教育产生重大影响。这笔赠款为购买最先进的稀释制冷机和磁体系统提供资金，使其能够进入接近绝对零度的温度和高磁场环境。超低温条件对于揭示新型电子材料的量子性质至关重要。在这些低温条件下的强磁场可以有效地用于操纵这种系统中的量子态。非侵入性显微技术，如磁共振（也成功地用于医学成像），可以非常强大地阐明这些新的物质状态的性质。布朗大学的一组实验学家和他们在其他机构的合作者在基本材料特性的前沿进行研究。他们的许多研究项目都需要低温和磁场相结合的环境。所要求的系统将大大提高他们的研究的意义和生产力，并开辟新的令人兴奋的研究方向。此外，它将对布朗大学的研究生和本科生教育产生重大影响。