Theoretical studies of Novel Order in Correlated Electron Materials

技术总结该奖项支持以非常规超导材料实验为动力的理论研究和教育。在低掺杂铜酸盐中发现了接近棋盘电荷密度波有序和自旋密度波有序的超导电性；在有机超导体、Ce-Co-In重费米子材料和铜酸镧材料中发现了一对不寻常的密度波超导电性；在氧化物界面发现了超导电性；在一些近藤晶格材料中出现了无法解释和令人费解的物理现象，所有材料都没有宇称对称性。在各种量子相变附近，人们发现了非常规超导电性。本研究项目的重点是在这种材料中出现新的有序。PI旨在为双密度波超导体及其与电荷密度波和自旋密度波有序的相互作用提供一个新的理论框架。PI将进一步研究由于对密度波超导体的波动而产生的新相的出现。他将研究相互作用在破碎的反转材料中的作用，这些材料既适用于块状材料，也适用于氧化物界面。描述高场量子临界点和超导电性之间相互作用的理论将被应用到特定的重费米子材料中。这个项目为研究生和本科生提供教育经验，并为派？S参加威斯康星大学教师研究经验计划做出贡献。密尔沃基和他关于凝聚态物理的公开演讲。PI的目标是通过让代表不足的群体参与研究来扩大参与。非技术总结该奖项支持理论研究和教育，这些研究和教育是由对表现出不寻常超导状态的特定材料的实验所推动的。超导性是物质的一种协同电子态，具有显著的性质。其中之一是携带电流而不耗散的能力。PI旨在为显示不寻常超导状态的材料类别开发一个理论框架，这些超导状态通常是当超导与磁性竞争时，或者电子可以自发地以有序方式自我组织的某种方式。对超导电性的深入了解可能会导致新的超导材料的发现，这些材料可能在无耗散电力传输或新型电子器件应用中具有实用价值。该项目为研究生和本科生提供教育经验，并为派？S参加威斯康星大学教师研究经验项目做出贡献。密尔沃基和他关于凝聚态物理的公开演讲。PI的目标是通过让代表不足的群体参与研究来扩大参与。

TECHNICAL SUMMARYThis award supports theoretical research and education that is motivated by experiments on unconventional superconducting materials. Superconductivity in close proximity to checkerboard charge density wave order and spin density wave order has been discovered in the underdoped cuprates; an unusual pair density wave superconductivity has been found in organic superconductors, in a cerium-cobalt-indium heavy fermion material, and also in a lanthanum cuprate material; superconductivity has been found at oxide interfaces; unexplained and puzzling physics has appeared in some Kondo lattice materials, all materials without parity symmetry. Unconventional superconductivity has been discovered in close proximity to a variety of quantum phase transitions.This research project focuses on the appearance of novel order in such materials. The PI aims to develop a new theoretical framework for pair density wave superconductors and their interplay with charge density wave and spin density wave order. The PI will further examine the appearance of new phases arising from fluctuations in pair density wave superconductors. He will examine the role of interactions in broken inversion materials applied to both bulk materials and to oxide interfaces. Theories describing the interplay between high-field quantum critical points and superconductivity with applications to specific heavy fermion materials will be developed.This project provides educational experiences for graduate and undergraduate students and contributes to the PI?s participation in the Research Experiences for Teachers program at the University of Wisconsin ? Milwaukee and his public presentations on condensed matter physics. The PI aims to broaden participation through involving underrepresented groups in the research. NON-TECHNICAL SUMMARYThis award supports theoretical research and education that is motivated by experiments on specific materials that exhibit unusual superconducting states. Superconductivity is a cooperative electronic state of matter with remarkable properties. Among them is the ability to carry electric current without dissipation. The PI aims to develop a theoretical framework for classes of materials that show unusual superconducting states, often when superconductivity competes with magnetism or some other way electrons can spontaneously organize themselves in an ordered way. A deeper understanding of superconductivity may lead to the discovery of new superconducting materials that may be practical for dissipationless electric power transmission or novel electronic device applications. This project provides educational experiences for graduate and undergraduate students and contributes to the PI?s participation in the Research Experiences for Teachers program at the University of Wisconsin ? Milwaukee and his public presentations on condensed matter physics. The PI aims to broaden participation through involving underrepresented groups in the research.