Transport Characteristics of BSCCO (2223) Superconducting Wires: From the Macroscopic to the Atomic Scale

该项目的目的是将银包覆Bi(Pb)SrCaCuO（2223）带的宏观电磁性能与其缺陷的原子和电子结构联系起来。低温扫描电子显微镜（LTSEM）将用于定位弱链接行为的存在。利用STEM & EELS技术，在超导相干长度以下的尺度上进行局部空穴浓度与原子结构的关联。丰富的载流子浓度和掺杂效应的光谱数据将应用于局部尺度，以确定胶带性能的实际微观起源。反过来，工业磁带供应商的大量技术专长将使缺陷内容能够量身定制，以增强磁带性能。提出的研究旨在将银包铋超导体带的宏观电磁性能与其缺陷的原子和电子结构联系起来。

9503877 Browning The aim of this project is to link the macroscopic electromagnetic performance of Ag sheathed Bi(Pb)SrCaCuO (2223) tapes to the atomic and electronic structure of their defects. Low-temperature scanning electron microscopy (LTSEM) will be used to locate the presence of weak-link behavior. Using STEM & EELS techniques correlation of the local hole concentration with the atomic structure on a scale below the superconducting coherence length will be made. The wealth of spectroscopic data on carrier concentrations and doping effects in this material will be applied on a local scale to determine the actual microscopic origins of tape performance. In turn, the substantial technical expertise of the industrial tape supplier will enable the defect content to be tailored for enhanced tape performance. %%% The proposed studies will aim to link the macroscopic electromagnetic performance of silver sheathed bismuth superconductor tapes to the atomic and electronic structure of their defects.