標題: | Concurrent intersection point of magnetization and magnetoconductivity curves in strongly fluctuating superconductors |
作者: | Chi, Cheng Jiang, Xujiang Wang, Jiangfan Li, Dingping Rosenstein, Baruch 電子物理學系 Department of Electrophysics |
公開日期: | 20-十二月-2017 |
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. |
URI: | http://dx.doi.org/10.1103/PhysRevB.96.224509 http://hdl.handle.net/11536/144259 |
ISSN: | 2469-9950 |
DOI: | 10.1103/PhysRevB.96.224509 |
期刊: | PHYSICAL REVIEW B |
Volume: | 96 |
Issue: | 22 |
起始頁: | 0 |
結束頁: | 0 |
顯示於類別: | 期刊論文 |