Infrared Spectroscopy of High-Tc Superconductors in High Magnetic Field

这个个人研究项目的重点是使用红外（IR）光谱法在高磁场中研究高Tc超导体的电动力学。 通过使用系统的光谱测量，在一个具有挑战性的参数空间，涉及高磁场，低温，红外频率，预计在高温超导领域的一些长期存在的问题将得到解决。 建议的测量将集中在高Tc材料中的涡旋状态的检查，出现的电子输运跨越绝缘体-超导体过渡的边界，以及对正常状态响应的制度，其中超导性被抑制高磁场的调查。 在一个具有挑战性的实验项目中整合研究和教育将有助于培养具有凝聚态物理，光学和材料科学合并领域专业知识的高技能人才。利用国家强磁场实验室的国家设施将极大地有利于毕业生的培训。铜氧化物高温超导的起源是当代物理学尚未解决的中心问题之一。对高Tc机制的研究涉及到凝聚态物质界的很大一部分，并已经导致了凝聚态科学中全新的概念。本提案中描述的新举措将通过解决至关重要的问题，大大推进我们目前对高Tc现象的理解。具体而言，该计划的目的是详细调查的电动力学的高Tc超导体在以前未探索的参数空间，涉及高磁场，低温和红外频率范围。 研究活动将自然地融合凝聚态物理、光学和材料科学的边界。在国家研究理事会最近的一份报告中，这种特殊的组合被确定为未来技术的“关键推动者”，“有望对世纪的生活产生普遍影响”。这个具有挑战性的研究计划将作为研究生的独特培训基地。 NSF的资助将扩大目前在研究生教育中代表性不足的群体的参与。

This individual investigator project is focused on investigations of the electrodynamics of high-Tc superconductors in high magnetic fields using infrared (IR) spectroscopy. Through the use of systematic spectroscopic measurements, in a challenging parameter space involving high magnetic fields, low temperature, IR frequencies, it is expected that some of the long-standing issues in the area of high-Tc superconductivity will be resolved. Proposed measurements will focus on the examination of the vortex state in high-Tc materials, emergence of the electronic transport across the boundary of the insulator-superconductor transition as well as on the investigations of the normal state response in the regime where superconductivity is suppressed by high magnetic field. The integration of research and education within a challenging experimental project will aid the preparation of highly skilled personnel with expertise in the area at the merger of condensed matter physics, optics and materials science. Training of graduates will tremendously benefit from the use of national facilities at the National High Magnetic Field Laboratory. The origin of high-Tc superconductivity in the copper oxides is one of the central unsolved problems in contemporary physics. The search for the high-Tc mechanism involves a large fraction of the condensed matter community and has already led to entirely new concepts in condensed matter science. New initiatives described in this proposal will significantly advance our present understanding of the high-Tc phenomenon by way of addressing critically important questions. Specifically, the proposed program is aimed at detailed investigations of the electrodynamics of high-Tc superconductors in the previously unexplored parameter space involving high magnetic fields, low temperatures and infrared frequency range. The research activities will naturally merge the boundaries of condensed matter physics, optics and material science. This particular combination has been identified as "critical enabler" of future technology that "promises to have a pervasive impact on life in the 21st century" in a recent report of the National Research Council. This challenging research program will serve as a unique training ground for graduate students. NSF funding will broaden participation of groups currently underrepresented in graduate education.