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arXiv 2201.12882cond-mat.supr-con
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铜氧化物超导体的另一种NMR观点

A different NMR view of cuprate superconductors

Jürgen Haase

摘要:

核磁共振(NMR)是一种强大的量子探针,但早期的结论,对铜酸盐的物理学,基于一组有限的数据,必须修改的最新发现和结果,从广泛的文献分析大多数NMR数据。这些显示了影响原子核的两个耦合电子自旋分量,最容易在平面Cu位移各向异性中看到。一个组件是自旋从最近发现的无处不在的金属激发,其他由于内在的,反铁磁耦合的电子铜自旋。这两种成分及其复杂的相互作用都会对核位移和弛豫产生影响。它们还显示了在平面Cu和O之间的电荷共享中看到的家族依赖性。的掺杂和两个自旋组件之间的相互作用的温度依赖性的主要现象进行了讨论的一个明显的现象,等待从理论上解释。

英文摘要:

Nuclear magnetic resonance (NMR) is a powerful quantum probe, but the early conclusions on the physics of the cuprates, based on a limited set of data, have to be revised in view of recent findings and results from extensive literature analyses of most NMR data. These show two coupled electronic spin components that influence the nuclei, most easily seen with the planar Cu shift anisotropy. One component is spin from the recently identified ubiquitous metallic excitations, the other due to the intrinsic, antiferromagnetically coupled electronic Cu spin. Both components and its intricate interaction leave their imprint on nuclear shifts and relaxation. They also show a family dependence seen in the charge sharing between planar Cu and O. The main phenomena of the doping and temperature dependences of the interplay between both spins components are discussed in terms of an apparent phenomenology that awaits explanation from theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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