The Electronic Structure of the High Temperature Superconductors Studied by Angle Resolved Photoemission

小行星9624048 角分辨 光电子能谱将用于多体系统的研究 效应 高温超导体 该技术将提供以下方面的线索：（1）正常态和超导态准粒子谱函数的性质，（2）超导态准粒子的动量分布。 正常态和超导态，（3）准粒子寿命与温度、动量和能量的关系， （四） 的关系 之间 货车霍韦奇点 和 的 正常 和 超导性质，（5）超导的性质 间隙功能在清洁范围内。有限的初步结果表明， 的 这些 性能 表现出 异常行为， 和 的 的 高 高温超导体 还有很多 有趣 物理学为我们准备了惊喜。 %角度分辨 光电子能谱将用于多体系统的研究 高温超导体的影响。在该技术中，样品用紫外光照射。 这导致样品中的电子被喷射出来。 通过分析这些喷射电子的能量，可以获得样品中电子的状态。 这 在传统材料中，信息可以导致 去了解这种材料如何携带电流， 超导在 降温 然而，在这方面， 高温超导体的行为与传统材料不同。 这些材料中的电子相互作用，一个电子的运动与其他电子的运动密切相关。材料中 这 发生 被称为 “强烈地 相关材料”。 该提案旨在提供 一 直接测量“光谱分布”。 的 后一措施 增加或减少一个电子的概率 示例. 这将导致对 小说 高温超导体的电子性质 ***

9624048 Campuzano Angle-Resolved Photoemission will be used to study many- body effects in high temperature superconductors. The technique will provide clues on (1) the nature of the spectral function of the quasiparticles in the normal and superconducting states, (2) the momentum distribution of the normal and superconducting states, (3) the dependence of the quasiparticle lifetime on temperature, momentum and energy, (4) the relationship between the van Hove singularity and the normal and superconducting properties, (5) the nature of the superconducting gap function in the clean limit. Limited preliminary results indicate that these properties exhibit unusual behavior, and that the high temperature superconductors still have many interesting Physics surprises in store for us. %%% Angle-Resolved Photoemission will be used to study many- body effects in high temperature superconductors. In this technique, the sample is irradiated with ultra-violet light. This causes the electrons in that sample to be ejected. By analyzing the energies of those ejected electrons, the state of the electrons in the sample can be obtained. This information can, in conventional materials, lead to understand how the material carries current, and how it becomes superconducting upon cooling. However, high temperature superconductors do not behave like conventional materials. The electrols in these materials interact with each other and the motion of one electron is strongly correlated with the motion of other electrons. Materials in which this occurs are called "Strongly Correlated Materials". The proposal seeks to provide a direct measurement of the "spectral distribution". The latter measures the probability of adding or removing an electron from the sample. This will lead to the understa nding of the novel electronic properties of high temperature superconductors. ***