THE IRREVERSIBILITY LINE IN BI2SR2CACU2O8 SINGLE-CRYSTALS

被引：0

作者：

ELABBAR, AA ^{[1
]}

MAXWELL, KJ ^{[1
]}

OWERSBRADLEY, JR ^{[1
]}

KING, PJ ^{[1
]}

LEES, J ^{[1
]}

BALAKRISHNAN, G ^{[1
]}

PAUL, DM ^{[1
]}

机构：

[1] UNIV WARWICK,DEPT PHYS,COVENTRY CV4 7AL,W MIDLANDS,ENGLAND

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 88卷 / 08期

关键词：

D O I：

10.1016/0038-1098(93)90058-U

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Ac-susceptibility measurements have been used to investigate the irreversibility line (IL) of a Bi2Sr2CaCu2O8 single crystal. The activation energy, U-0, determined from the frequency dependence of the ac-susceptibility, can be related to the IL if one employs the model of thermally activated flux creep. This correlation is clearly demonstrated by the observation of a kink in the IL and the existence of two regions in the U-0(B) curve. These results show that for the magnetic field strengths considered in this work, the IL is a depinning line arising from a thermally activated process.

引用

页码：597 / 600

页数：4

共 7 条

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