Computational Studies of Electronic Models for Ladders and Planes

该奖项支持PIs在强相关电子材料方面的持续研究工作，重点是高温超导体和相关的阶梯化合物。提出的工作涉及到强相关材料的晶格模型和数值模拟。调查有四个方面：(1)扩展范围库仑相互作用对由短程反铁磁波动引起的空穴配对机制的影响，(2)扩展跳跃项对Hubbard和t-J模型的零温度相图的影响，(3)新的算法将允许计算比精确对角化技术更大的系统的角分辨光电响应，(4)研究显示d波超导性的模型，目的是阐明对涨落的作用。该奖项支持两名研究人员的教育和研究，其中一名是女性。提议的工作涉及对具有强电子相关性的材料的计算研究。本文的目的是阐明高温超导体及其相关材料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掌握最先进的计算方法

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.***