Vortex lattice structure in Bi2Sr2CaCu2O8+delta at high temperatures

被引：23

作者：

Kim, P

Yao, Z

Lieber, CM

机构：

[1] Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.77.5118

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The microscopic structure of the magnetic Bur-line lattice (FLL) in Bi2Sr7CaCu2O8+delta superconductors was studied at temperatures up to 77 K by decoration. Comparison of FLLs obtained at 55 and 4.2 K shows that twisted bond defects are a manifestation of thermal fluctuations at elevated temperature. Analyses of the orientational and translational correlation functions for field and zero-field cooled lattices obtained at 55 K suggest that the observed FLL is an equilibrium hexatic. These data were also used to estimate the FLL freezing temperature.

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页码：5118 / 5121

页数：4

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