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arXiv 1107.4170cond-mat.supr-con
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BaFe2-xCoxAs2超导体的高内禀磁通钉扎强度

High intrinsic flux pinning strength of BaFe2-xCoxAs2 superconductor

K. Vinod, Shilpam Sharma, A. T. Satya, C. S. Sundar, A. Bharathi

摘要:

本文研究了欠掺杂、最佳掺杂和过掺杂Ba(Fe,Co)_2As_2单晶的磁通钉扎势U_0与场的关系。使用热激活磁通流(TAFF)模型确定U0,对于H|| ab和h|| c构型。所观察到的幂律依赖性U0与H表明,对于字段高达12 T的H|| ab和7 T代表H|| c,单独的磁通钉扎,以及对于H,超过7 T的磁场||C、集体钉扎开始起作用。本文对Ba(Fe,Co)_2As_2超导体与其它超导体的U_0进行了比较

英文摘要:

The field dependence of flux pinning potential, U0, for under-doped, optimally doped and over-doped Ba(Fe,Co)2As2 single crystals has been investigated. U0 is determined using the Thermally Activated Flux Flow (TAFF) model, for both H || ab and H || c configurations. The observed power law dependencies of U0 versus H suggest that for fields upto 12 T for H || ab and 7 T for H || c, individual flux pinning, and for fields beyond 7 T for H || c, collective pinning becomes operative. A comparison of U0 for the Ba(Fe,Co)2As2 system with some other superconductors is presented

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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