Study of Fluxon by Means of Neutron Scattering and Its Application to Engineering Science

详细的磁通结构信息对阐明超导机理和促进电磁研究具有重要意义。由于小角中子散射技术为II型超导体的磁通结构提供了有用的信息，我们将该技术与扫描霍尔探测技术、磁化和电阻率测量技术一起进行了深入的研究。(1) FLL的各向异性、维数和磁相图。(2)钉接FLL结构偏差。(3)相变和尺寸交叉导致的FLL动力学。(4) LSCO单晶中FLL的非均相结构。(5)基于STM/STS的FLL详细结构。(6)扫描霍尔探头测量局部磁通分布。(7)基于电磁理论的磁化过程分析。最后的讨论会议于3月2日在京都举行。

Detailed structural information on fluxon is important to make clear the mechanism of superconductivity and promote the electromagnetic studies. As the small-angle neutron scattering technique provides a useful information in the magnetic flux structure in type II superconductors, we applied this technique for following intensive studies together with scanning Hall probe technipue, magnetization and electrical resistivity measurement. (1) Anisotropy, dimensionality of FLL and magnetic phase diagram. (2) Structural deviation of FLL by pinning. (3) Dynamics of FLL due to phase transition and dimensional cross-over. (4) Inhomogeneous structure of FLL in LSCO single crystal. (5) Detailed structure of FLL by means of STM/STS.(6) Local magnetic flux distribution by means of scanning Hall probe measurement. (7) Analysis of magnetization process based on electromagnetic theory. The final discussion meeting was held at Kyoto on 2nd of March.