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arXiv 1404.4672cond-mat.str-el
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重电子材料中的量子临界行为

Quantum critical behavior in heavy electron materials

Yi-feng Yang, David Pines

摘要:

重电子材料中的量子临界行为通常由压力或磁场的变化引起。在这篇文章中,我们开发了一个简单的统一模型,用于压力和磁场对杂化有效性的综合影响,该杂化在重电子出现的双流体描述中起着核心作用。我们发现,它导致量子临界和离域线,以及与CeCoIn 5的测量,产生的反铁磁有序和量子临界行为测量YbRh 2Si 2的场和压力引起的变化的定量解释,并提供了一个有价值的框架描述的作用,磁场在带来量子临界行为在其他重电子材料。

英文摘要:

Quantum critical behavior in heavy electron materials is typically brought about by changes in pressure or magnetic field. In this communication, we develop a simple unified model for the combined influence of pressure and magnetic field on the effectiveness of the hybridization that plays a central role in the two-fluid description of heavy electron emergence. We show that it leads to quantum critical and delocalization lines that accord well with those measured for CeCoIn5, yields a quantitative explanation of the field and pressure induced changes in antiferromagnetic ordering and quantum critical behavior measured for YbRh2Si2, and provides a valuable framework for describing the role of magnetic fields in bringing about quantum critical behavior in other heavy electron materials.

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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