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arXiv · 1107.4170

High intrinsic flux pinning strength of BaFe2-xCoxAs2 superconductor

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

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

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K. Vinod, Shilpam Sharma, A. T. Satya, C. S. Sundar, A. Bharathi. 2011-07-21. High intrinsic flux pinning strength of BaFe2-xCoxAs2 superconductor. https://arxiv.org/abs/1107.4170

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