Phenomenology and Microscopic Theory of High-Temperature Superconductors

小行星9421888 高温超导体的微观量子力学的理论研究将采用一种强调实验现象学而不是第一原理计算的策略。 这项工作的目标是使该领域大量的实验事实相互协调，优先考虑这些事实，区分真正的新物理行为与由于样品不完美而引起的行为，并激发重要的新实验。 这种方法反映了这样一种观点，即这个领域中重要的新物理思想已经被阐明，现在的任务是在实验室中区分它们。 理论必须参与这个过程，因为新物理学的证据是微妙的，经常在一个实验和另一个实验之间的不一致中发现。 而且，现在已经很明显，在这一领域，实验上的混乱往往不会自己消除。磁哈密顿量的一些具体的计算也提出了一些违反时间反演对称性的超导态的性质的进一步调查。 这是对先前资助的任意子超导性工作的自然延伸。 高温超导理论研究的计划将进行强调解释现有的实验结果，并建立在这些创建新的模型，并建议新的实验。 ***

9421888 Laughlin A theoretical study will be made of the microscopic quantum mechanics of high temperature superconductors using a strategy that emphasizes experimental phenomenology over first principles computation. The goals of the work are to reconcile the enormous number of experimental facts in this field with one another, to prioritize these facts, to distinguish genuinely new physical behavior from that due to sample imperfection, and to motivate significant new experiments. This approach reflects the view that the important new physical ideas in this field have already been articulated, and that the task is now to distinguish among them in the laboratory. Theory must be involved in this process because the evidence of new physics is subtle and is often found in the inconsistencies between one experiment and another. Also, it has now become evident that experimental confusion tends not to clear up by itself in this field. Some specific computations for magnetic Hamiltonians are also proposed as is some further investigation into the properties of superconducting states that violate time-reversal symmmetry. This is a natural extension of work on anyon superconductivity performed on the previous grant. %%% A program of theoretical research on high temperature superconductivity will be undertaken which emphasizes interpreting existing experimental results and building on these to create new models and suggesting new experiments. ***