Driven dynamics of the vortex-phase mixture near the peak effect: the "vortex capacitor".
Driven dynamics of the vortex-phase mixture near the peak effect: the "vortex capacitor".
复制标题
接近峰值效应的涡流相混合物的驱动动力学：“涡流电容器”。
DOI：
10.1103/physrevlett.88.087002
复制
发表时间：
2002
影响因子：
8.6
通讯作者：
S. Bhattacharya
中科院分区：
文献类型：
--
作者：
M. Marchevsky;M. Higgins;S. Bhattacharya
提出了峰值效应附近涡旋动力学的唯象模型，该模型考虑了具有不同临界电流密度的两个涡旋相共存。它根据涡旋物质的“污染”和“退火”，提供了广泛报道的异常动力学效应的定量描述。利用超导体NbSe(2)中的扫描交流霍尔显微镜首次获得了驱动涡旋晶格中钉扎的真实空间可视化。结果与所提议的情景一致。
A phenomenological model of vortex dynamics in the vicinity of the peak effect, which considers a coexistence of two vortex phases with different critical current densities, is proposed. It provides a quantitative description of the widely reported anomalous dynamic effects in terms of "contamination" and "annealing" of the vortex matter. Scanning ac Hall microscopy in the superconductor NbSe(2) is used to obtain the first real-space visualization of pinning in the driven vortex lattice. The results are consistent with the proposed scenario.