Concurrent intersection point of magnetization and magnetoconductivity curves in strongly fluctuating superconductors

Cheng Chi, Xujiang Jiang, Jiangfan Wang, Dingping Li, Rosenstein Baruch

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

The thermal fluctuations contribution to magnetization and magnetoconductivity of type-II layered superconductors is calculated in the framework of the Lawrence-Doniach model. For numerous high-temperature cuprate superconductors, it was discovered that the magnetization dependence on temperature in a wide range of fields exhibits an intersection point at a temperature slightly below Tc. We notice a similar intersection point of the magnetoconductivity curves at the approximate same temperature. The phenomenon is explained by strong (non-Gaussian) thermal fluctuations with interactions treated using a self-consistent theory. All higher Landau levels should be included. Dimensionality of the fluctuations is defined, and the two- to three-dimensional crossover is the key for the existence of intersection points.

原文English
文章編號224509
期刊Physical Review B
96
發行號22
DOIs
出版狀態Published - 20 十二月 2017

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