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arXiv 1901.05587cond-mat.str-elcond-mat.supr-conquant-ph
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低掺杂铜氧化物超导体中沙漏磁色散的起源

The origin of hour-glass magnetic dispersion in underdoped cuprate superconductors

Y. A. Kharkov, O. P. Sushkov

摘要:

在目前的工作中,我们解释了沙漏磁分散在欠掺杂的铜酸盐。色散是由Lifshitz型磁临界引起的。超导性也起作用,但作用是次要的。我们列出了与沙漏有关的六个主要实验观察结果,并对它们进行了解释。该理论提供了一个统一的图片在各种铜酸盐家庭,包括“沙漏”和“酒杯”分散和紧急静态无公度秩序的磁激发的演变。我们提出了Lifshitz自旋液体“指纹”求和规则,并表明最新的数据证实了求和规则的有效性。

英文摘要:

In the present work we explain the hour-glass magnetic dispersion in underdoped cuprates. The dispersion arises due to the Lifshitz-type magnetic criticality. Superconductivity also plays a role, but the role is secondary. We list six major experimental observations related to the hour-glass and explain all of them. The theory provides a unified picture of the evolution of magnetic excitations in various cuprate families, including "hour-glass" and "wine-glass" dispersions and an emergent static incommensurate order. We propose the Lifshitz spin liquid "fingerprint" sum rule, and show that the latest data confirm the validity of the sum rule.

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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