Theoretical Studies of Superconductivity

该奖项支持非常规超导体和奇异超导体的理论研究和教育。该奖项有三个相关的研究推动力。第一部分试图阐明在介观和纳米尺度超导材料以及约瑟夫森结中自然出现的对称性破缺的作用。第二个目标是确定超导体在量子临界点附近的性质，并强调这些性质与传统的弱耦合理论有何不同。第三部分将探讨超导状态下Sr2RuO4理论与实验严重不一致的根源。这项研究将涉及微观和现象学理论的结合。该奖项还支持让研究生和本科生参与研究。该倡议旨在通过吸收女研究生和本科生参加威斯康星大学-密尔沃基大学本科生研究经验方案，扩大代表不足群体的参与。该计划强调少数民族和女性本科生的参与。%该奖项支持非常规超导和奇异超导体的理论研究和教育。在单壁碳纳米管和其他纳米结构中已经发现了超导电性；介观超导体在磁场中显示了新的和有趣的行为。超导电性已经在强相关电子材料中的各种磁性相附近被发现。PI将跟踪三个重要领域的推进，以阐明纳米或纳米结构超导体和奇异块状超导体中超导态的性质。探索量子相变在确定超导和正常态的性质中的作用是这项工作的一个特别及时的方面。量子相变对于理解强关联材料中超导态的奇异性质是非常重要的，包括高温超导体和一些重费米子超导体。PI还将探索超导状态下Sr2RuO4理论和实验之间尖锐不一致的根源，这种超导状态很可能是一种非传统的自旋三重态超导体。这项研究将涉及微观和现象学理论的结合。该奖项还支持让研究生和本科生参与研究。该倡议旨在通过吸收女研究生和本科生参加威斯康星大学-密尔沃基大学本科生研究经验方案，扩大代表不足群体的参与。该计划强调少数民族和女性本科生的参与。*

This award supports theoretical research and education on unconventional superconductivity and exotic superconductors. This award has three related research thrusts. The first seeks to elucidate the role of broken symmetries that naturally appear in mesoscopic and nanoscale superconducting materials and at Josephson junctions. The second aims to determine the properties of superconductors near quantum critical points and to emphasize how these differ from conventional weak-coupling theories. The third will explore the origins of a sharp inconsistency between theory and experiment in the superconducting state of Sr2RuO4. The research will involve a combination of microscopic and phenomenological theories. This award also supports involving graduate and undergraduate students in the research. The PI aims to broaden participation of underrepresented groups through the inclusion of female graduate students and through the participation of undergraduates in the University of Wisconsin-Milwaukee Research Experiences for Undergraduates program. This program emphasizes the participation of minority and female undergraduate students.%%%This award supports theoretical research and education on unconventional superconductivity and exotic superconductors. Superconductivity has been discovered in single-wall carbon nanotubes and other nanostructures; mescoscopic superconductors have revealed new and intriguing behavior in magnetic fields. Superconductivity has been discovered in close proximity to a variety of magnetic phases in strongly correlated electron materials.The PI will follow thrusts in three important areas to elucidate the nature of superconducting states in nanoscale or nanostructured superconductors and exotic bulk superconductors. Exploring the role of quantum phase transitions, phase transitions that occur at zero-temperature, in determining the properties of the superconducting and normal states is a particularly timely aspect of this work. Quantum phase transitions appear to be important in understanding the exotic properties of superconducting states in strongly correlated materials, including the high temperature superconductors and some heavy fermion superconductors. The PI will also explore the origins of a sharp inconsistency between theory and experiment in the superconducting state of Sr2RuO4, likely an unconventional spin-triplet superconductor. The research will involve a combination of microscopic and phenomenological theories. This award also supports involving graduate and undergraduate students in the research. The PI aims to broaden participation of underrepresented groups through the inclusion of female graduate students and through the participation of undergraduates in the University of Wisconsin- Milwaukee Research Experiences for Undergraduates program. This program emphasizes the participation of minority and female undergraduate students.***