U.S.-Germany Cooperative Research: Disordered Electrons in d-wave Superconductors

该奖项支持佛罗里达大学的PI Peter Hirschfeld与德国奥格斯堡大学物理系的Klaus Ziegler合作。研究重点是高tc超导体和重费米子材料在无序状态下的低能激发。该项目将使用近似方法进行现实建模，并使用严格方法进行相关简化模型，以研究准粒子是否定域于超导状态-目前该领域的一个开放和重要问题。该项目还将产生计算，阐明交流传输特性，如微波吸收，这将与实验进行比较。此次合作结合了德国团队在无序电子场理论模型和非常规超导PI方面的互补专业知识。

9815833HirschfeldThis award supports the PI, Peter Hirschfeld, of the University of Florida in a collaboration with Klaus Ziegler of the Department of Physics at the University of Augsburg, Germany. The research focus is on the investigation of the low-energy excitations in high-Tc superconductors and heavy-fermion materials in the presence of disorder. The project will use approximate methods for realistic modeling and rigorous methods for related, simplified models to investigate whether quasiparticles are localized in the superconducting state--currently an open and important question in the field. The project will also produce calculations that shed light on AC-transport properties, such as microwave absorption, which will be compared to experiment. The collaboration combines the complementary expertise of the German group in field theoretical models of disordered electrons and of the PI in unconventional superconductivity.