微波食品加热
纳米结构
超导电性
材料科学
凝聚态物理
电介质
Ⅱ型超导体
涡流
薄膜
晶体缺陷
表面电导率
高温超导
纳米技术
光电子学
电导率
化学
物理
量子力学
热力学
物理化学
作者
A. O. Pokusinskyi,A. L. Kasatkin,S. I. Futimsky,A. A. Kalenyuk,O. O. Boliasova,A. P. Shapovalov
摘要
The impact of artificially created defects nanostructure, formed by implanted dielectric nanoparticles or irradiation defects, on microwave properties of high-Tc superconductor films is analyzed in the framework of phenomenological theory for microwave response of type-II superconductors. We have calculated the surface resistance for such a kind of nanostructured type-II superconductor film and investigated conditions for the emergence of nonlinear response caused by the entrance of microwave-induced vortices in the film's interior through its edges. The obtained results indicate that artificial defect nanostructure in the film's interior formed by point-like or columnar structural defects can significantly improve its microwave characteristics in both the Meissner and mixed states and also increase the threshold for the onset of nonlinear response.
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