arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.2972cond-mat.supr-concond-mat.str-el
收藏

铜氧化物超导体中的散射和配对

Scattering and Pairing in Cuprate Superconductors

Louis Taillefer

摘要:

经过二十多年的研究,铜酸盐异常强的超导性的起源仍然是一个争论的主题。在这里,我们遵循一个新的线索:超导性的起始温度与反常正常态散射的强度成比例,反常正常态散射使电阻率与温度成线性关系。在有机超导体中发现了线性电阻率和Tc之间的相同相关性,已知配对来自附近反铁磁相的波动,并且在磷属元素化物超导体中也可能存在反铁磁情况。在铜氧化物中,问题是赝能隙相是否起着相应的作用,它的涨落负责配对和散射。我们回顾了最近的研究,揭示了这个阶段-它的边界,它的量子临界点,和它的对称性破缺。新出现的图像是一个阶段的自旋密度波秩序和波动,在广泛的类比与有机,磷属元素化物,和重费米子超导体。

英文摘要:

The origin of the exceptionally strong superconductivity of cuprates remains a subject of debate after more than two decades of investigation. Here we follow a new lead: The onset temperature for superconductivity scales with the strength of the anomalous normal-state scattering that makes the resistivity linear in temperature. The same correlation between linear resistivity and Tc is found in organic superconductors, for which pairing is known to come from fluctuations of a nearby antiferromagnetic phase, and in pnictide superconductors, for which an antiferromagnetic scenario is also likely. In the cuprates, the question is whether the pseudogap phase plays the corresponding role, with its fluctuations responsible for pairing and scattering. We review recent studies that shed light on this phase - its boundary, its quantum critical point, and its broken symmetries. The emerging picture is that of a phase with spin-density-wave order and fluctuations, in broad analogy with organic, pnictide, and heavy-fermion superconductors.

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。

↑