Strong Coupling Physics in Mott and Related Systems

莫特及相关系统中的强耦合物理

• 批准号: 1104909
• 负责人: Philip Phillips
• 金额: $ 33万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1104909&HistoricalAwards=false
• 关键词: Strong; Coupling; Physics; Mott; Related

TECHNICAL SUMMARYThis award supports theoretical research and education that is aimed to advance understanding of strongly correlated electron materials. A recent advance from string theory, the gauge-gravity duality, has opened up a possible non-perturbative approach to the physics of quantum many-body systems. The PI will explore whether through this theory it may be possible to understand the physics of strongly correlated materials at low energies in a controlled way. The PI aims to tailor this technique for Mott insulators. A goal is to extend this technique so that basic problems of superconductivity in a non-fermi liquid system can be addressed. The PI will engage a new line of research to explore the possibility of superconductivity in the multi-orbital Mott systems, the oxychalcogenides. The PI also aims to disentangle how orbital ordering and magnetic order mediate transport anisotropies seen in recent experiments on the iron-based pnictide superconductors.This award also supports graduate student training at the frontiers of condensed matter theory. The PI will continue his work to increase the participation of minorities in science through recruiting and mentoring minority students and through outreach activities to public schools. The PI will also revise his recent textbook for the second edition. NON-TECHNICAL SUMMARYThis award supports theoretical research and education on materials which contain electrons that interact strongly with each other. Strong interaction between electrons leads to their correlated motion, rather like a complicated dance, and in the quantum world to new states of electronic matter. Of particular interest is the appearance of superconductivity in these strongly correlated materials. Superconductivity is one of the possible complicated dances of electrons with unusual properties, among them the ability to conduct electricity without losses. The problem of how to precisely describe these new states of matter in the language of theory is a challenging one. The PI will attempt to exploit advances in the theory of gravity to understand systems of many strongly interacting electrons and how they organize themselves into new states of matter. The PI will also use advanced but more conventional methods to study the emergence of unusual superconductivity in recently discovered materials. Through these studies, the PI aims to elucidate the nature of superconductivity in strongly correlated materials and the physical mechanism that leads electrons to organize into this state of matter. Understanding the latter could lead to the discovery of materials in which superconductivity appears at higher temperatures. So far superconductivity is relegated to the deep freeze where the atmospheric gas nitrogen is nearly a liquid or even colder still. The discovery of materials which exhibit superconductivity at temperatures higher than room temperature would lead to possible new electronic device technologies and methods for virtually lossless transmission of electric power.This award also supports graduate student training at the frontiers of condensed matter theory. The PI will continue his work to increase the participation of minorities in science through recruiting and mentoring minority students and through outreach activities to public schools. The PI will also revise his recent textbook for the second edition.

技术摘要这一奖项支持理论研究和教育，旨在提高对强相关的电子材料的了解。 弦理论的最新进展是量规重度二元性，为量子多体系统的物理学开辟了一种可能的非扰动方法。 PI将通过该理论探索是否有可能以受控的方式理解低能量上强相关材料的物理。 PI旨在为Mott绝缘子调整此技术。 一个目标是扩展此技术，以便可以解决非弗米液体系统中超导性的基本问题。 PI将参与一项新的研究线，以探索多轨莫特系统（Oxychalcogenides）中超导性的可能性。 PI还旨在解散轨道订购和磁性如何介导在基于铁的PNICTIDE超导体的实验中看到的转运各向异性。该奖项还支持在凝结物质理论领域的研究生培训。 PI将通过招募和指导少数民族学生以及向公立学校的活动活动来继续他的工作，以增加少数群体参与科学的参与。 PI还将修改他最近的第二版教科书。非技术摘要这一奖项支持有关材料的理论研究和教育，这些材料包含彼此相互作用的电子。电子之间的强烈相互作用会导致它们相关的运动，就像一个复杂的舞蹈一样，在量子世界中与新的电子物质状态。特别有趣的是在这些密切相关的材料中出现超导性。超导性是具有异常特性的电子的复杂舞蹈之一，其中包括无损失的电力的能力。如何精确描述这些新事物的问题是一个具有挑战性的问题。 PI将试图利用重力理论的进步，以了解许多强烈相互作用的电子的系统，以及它们如何将自己组织成新的物质状态。 PI还将使用高级但更常规的方法来研究最近发现的材料中异常超导性的出现。通过这些研究，PI旨在阐明强相关材料中超导性的性质以及导致电子组织到这种物质状态的物理机制。了解后者可能导致在较高温度下出现超导性的材料。到目前为止，超导性降级为深度冻结，在大气中，气体氮几乎是一种液体甚至更冷。发现在高于室温的温度下表现出超导性的材料将导致可能的新电子设备技术和几乎无损传播电力传播的方法。该奖项还支持凝结物质理论边界的研究生培训。 PI将通过招募和指导少数民族学生以及向公立学校的活动活动来继续他的工作，以增加少数群体参与科学的参与。 PI还将修改他最近的第二版教科书。