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Fermion dynamical symmetry and strongly-correlated electrons: A comprehensive model of high-temperature superconductivity
Frontiers of Physics ( IF 6.5 ) Pub Date : 2020-04-03 , DOI: 10.1007/s11467-020-0957-5
Mike Guidry , Yang Sun , Lian-Ao Wu , Cheng-Li Wu

We review application of the SU(4) model of strongly-correlated electrons to cuprate and iron-based superconductors. A minimal self-consistent generalization of BCS theory to incorporate antiferromagnetism on an equal footing with pairing and strong Coulomb repulsion is found to account systematically for the major features of high-temperature superconductivity, with microscopic details of the parent compounds entering only parametrically. This provides a systematic procedure to separate essential from peripheral, suggesting that many features exhibited by the high-Tc data set are of interest in their own right but are not central to the superconducting mechanism. More generally, we propose that the surprisingly broad range of conventional and unconventional superconducting and superfluid behavior observed across many fields of physics results from the systematic appearance of similar algebraic structures for the emergent effective Hamiltonians, even though the microscopic Hamiltonians of the corresponding parent states may differ radically from each other.

中文翻译:

费米子动力学对称性和强相关电子:高温超导的综合模型

我们回顾了强相关电子SU(4)模型对铜酸盐和铁基超导体的应用。发现BCS理论的最小自洽归纳是将反铁磁性同等地结合在一起并具有强大的库仑斥力,这系统地解释了高温超导的主要特征,而母体化合物的微观细节仅在参数上输入。这提供了一种系统的程序,可将基本设备与外围设备区分开来,这表明高T c显示的许多功能数据集本身是有趣的,但不是超导机制的核心。更笼统地说,我们认为,在许多物理领域中观察到的常规和非常规超导和超流体行为的范围出乎意料的广泛,是由于出现了有效的哈密顿量的相似代数结构的系统出现,即使相应母体状态的微观哈密顿量可能彼此根本不同。
更新日期:2020-04-03
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