Computational Studies of Electronic Models for Ladders and Planes

9814350 Dagotto该奖项支持PI继续研究强相关电子材料，重点是高温超导体和相关的“阶梯”化合物。 所提出的工作涉及强关联材料的晶格模型和数值模拟。 有四个调查领域：（1）扩展库仑相互作用对短程反铁磁涨落引起的空穴配对机制的影响，（2）扩展跳跃项对Hubbard和t-J模型零温相图的影响，（3）新的算法，这将允许计算的角度分辨光电发射响应的系统大于那些精确的-对角化技术是可能的，（4）研究模型，显示d波超导性的目的是阐明对波动的作用。该奖项支持两名研究人员的教育和研究，其中一名为女性。 拟议的工作涉及对具有强电子相关性的材料的计算研究。 该提案的目的是阐明高温超导体及其相关物研究中出现的关键问题。 这项研究还旨在开发改进的计算算法，并努力培养学生和研究生最先进的计算方法。

9814350DagottoThis award supports the PIs continued research efforts on strongly correlated electronic materials with emphasis on the high temperature superconductors and related 'ladder' compounds. The proposed work involves lattice models for strongly correlated materials and numerical simulation. There are four areas of investigation: (1) the influence of extended-range Coulomb interactions on the hole pairing mechanism that arises from short-range antiferromagnetic fluctuations, (2) the effect of extended hopping terms on the zero-temperature phase diagram of Hubbard and t-J models, (3) new algorithms for that will allow the calculation of the angle-resolved photoemission response for systems larger than those for which exact-diagonalization techniques are possible, (4) the study of models that exhibit d-wave superconductivity with the aim of elucidating the role of pair-fluctuations. %%%This award supports education and research for two investigators, one female. The proposed work involves computational research on materials with strong electronic correlations. An aim of this proposal is to elucidate key issues that have arisen in the study of the high temperature superconductors and their relatives. This research also aims to develop improved computational algorithms and the effort will train students and post-graduates in state-of-the-art computational methods.***