CAREER: NMR Studies of Quantum Fluctuations in Strongly Correlated Systems in High Magnetic Fields and at Low Temperatures

职业：高磁场和低温下强相关系统中量子涨落的核磁共振研究

• 批准号: 0547938
• 负责人: Vesna Mitrovic
• 金额: $ 50万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0547938&HistoricalAwards=false
• 关键词: CAREER; NMR; Studies; Quantum; Fluctuations

******NON-TECHNICAL ABSTRACT*****Many magnetic phenomena in materials remain to be understood. The interest in answering fundamental questions runs in parallel with the technological drive to find new materials for use in spin-based devices. The goal of this Faculty Early Career Development project at Brown University is to investigate the quantum nature of novel magnetic materials using magnetic resonance techniques. At very low temperatures, a strong magnetic field can be effectively used to manipulate the quantum states in such systems. Non-invasive microscopic techniques, such as magnetic resonance, sensitive to both spin and charge of an electron can be very powerful in elucidating nature of these new states of matter. The ultimate goal of this project is to answer fundamental questions regarding quantum magnetism and to discover new collective phenomena. The educational value of these projects arises from the extensive participation of both graduate and undergraduate students. Conducting research at the high magnetic field facilities will be of particular benefit in training students. In addition, short seminar courses on spectroscopic techniques used in modern condensed matter studies will be offered. Furthermore outreach will be targeted at younger children with the goal of eventually increasing the diversity of the physics profession.****** TECHNICAL ABSTRACT*****The goal of this Faculty Early Career Development project at Brown University is to investigate strongly correlated magnetic materials using magnetic resonance techniques. One of the challenges of modern condensed matter physics is to understand the nature of quantum phases and phase transitions in matter. This project will focus on the study of frustrated quantum magnets. These materials are of particular interest since they can be used to test theoretical predictions on quantum phase transitions and the effects of competing quantum interactions, tunable by the application of an external magnetic field. The ultimate goal of the research is to clarify the nature of the ground states in frustrated quantum magnets and provide important constraints on the theoretical understanding of strongly correlated condensed matter systems. The educational value of these projects arises from the extensive participation of both graduate and undergraduate students. Conducting research at the high magnetic field facilities will be of particular benefit in training students. In addition, short seminar courses on spectroscopic techniques used in modern condensed matter studies will be offered. Furthermore outreach will be targeted at younger children with the goal of eventually increasing the diversity of the physics profession.

** 非技术摘要 * 材料中的许多磁现象仍有待理解。对回答基本问题的兴趣与寻找用于自旋器件的新材料的技术驱动并行。布朗大学教师早期职业发展项目的目标是利用磁共振技术研究新型磁性材料的量子性质。在非常低的温度下，强磁场可以有效地用于操纵这种系统中的量子态。非侵入性的显微技术，如磁共振，对电子的自旋和电荷都很敏感，在阐明这些新的物质状态的性质方面非常强大。该项目的最终目标是回答有关量子磁学的基本问题，并发现新的集体现象。这些项目的教育价值来自研究生和本科生的广泛参与。在高磁场设施进行研究将特别有利于培训学生。此外，还将提供关于现代凝聚态研究中使用的光谱技术的短期研讨会课程。此外，推广活动将针对年幼的儿童，目标是最终增加物理专业的多样性。技术摘要 * 布朗大学教师早期职业发展项目的目标是利用磁共振技术研究强相关的磁性材料。现代凝聚态物理学的挑战之一是理解物质中量子相和相变的本质。该项目将重点研究受挫折的量子磁体。这些材料特别令人感兴趣，因为它们可用于测试量子相变的理论预测和竞争量子相互作用的影响，可通过施加外部磁场进行调节。该研究的最终目标是澄清受抑量子磁体中基态的性质，并为强关联凝聚态系统的理论理解提供重要约束。这些项目的教育价值来自研究生和本科生的广泛参与。在高磁场设施进行研究将特别有利于培训学生。此外，还将提供关于现代凝聚态研究中使用的光谱技术的短期研讨会课程。此外，外联活动将针对年幼儿童，目标是最终增加物理专业的多样性。