论文标题

由强相关驱动的量子相

Quantum phases driven by strong correlations

论文作者

Paschen, Silke, Si, Qimiao

论文摘要

长期以来,人们一直认为,紧密相关的系统与其非互动对应物已绝热地连接。最近的发展强调了这种传统观念在各种环境中的谬误。在这里,我们使用一类强相关的电子系统作为一个平台,以说明由强相关性产生的量子相和波动的种类。例子是违反费米液体范式的量子关键状态,即超出BCS框架的非常规超导性,以及由近代相互作用引起的拓扑半学。我们通过利用替代自由度或替代相互作用的替代程度来评估设计物质其他外来阶段的前景,并指出这些相关状态对于量子技术的潜力。

It has long been thought that strongly correlated systems are adiabatically connected to their noninteracting counterpart. Recent developments have highlighted the fallacy of this traditional notion in a variety of settings. Here we use a class of strongly correlated electron systems as a platform to illustrate the kind of quantum phases and fluctuations that are created by strong correlations. Examples are quantum critical states that violate the Fermi liquid paradigm, unconventional superconductivity that goes beyond the BCS framework, and topological semimetals induced by the Kondo interaction. We assess the prospect of designing other exotic phases of matter, by utilizing alternative degrees of freedom or alternative interactions, and point to the potential of these correlated states for quantum technology.

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