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AC dynamic reorganization and critical phase transitions in superconducting vortex matter
Superconductor Science and Technology ( IF 3.7 ) Pub Date : 2020-11-25 , DOI: 10.1088/1361-6668/abbbc8
G Pasquini 1, 2 , M Marziali Bermdez 1, 3 , V Bekeris 1, 2
Affiliation  

Vortex matter in type-II superconductors is a model complex system belonging to the vast ensemble of disordered elastic media. In all these systems, depinning occurs when an external drive is increased beyond a critical force. The nature of the depinning transition, the connection with a non-equilibrium phase transition, and its relation with proliferation or annealing of topological defects has been long and thoroughly studied. When driven by alternating forces these systems display particular characteristics, which are not a trivial extension of the corresponding DC regimes, and may be dynamically reorganized into different configurations. In fact, thermal history effects and dynamic reorganization are generally found in the vicinity of an order-disorder transition, whose fingerprint is the sudden rise of the effective pinning, known as Peak Effect, whose origin remained controversial for a while. In this review we reassess together a set of results presented during the last two decades, which allows building a comprehensive picture describing thermal and dynamic history effects in vortex matter, the oscillatory dynamics, the associated dynamic reorganization, and its connection with the AC depinning dynamic phase transition.



中文翻译:

超导涡旋物质中的交流动态重组和临界相变

II型超导体中的涡旋物质是一个模型复杂的系统,属于无序弹性介质的整体。在所有这些系统中,当外部驱动器增加到超过临界力时,就会发生销钉分离。钉扎转变的性质,与非平衡相转变的联系及其与拓扑缺陷的扩散或退火的关系已被长期而彻底地研究。当由交变力驱动时,这些系统显示出特定的特征,这不是相应的DC范围的重要扩展,并且可以动态地重组为不同的配置。实际上,热历史效应和动态重组通常在有序-无序过渡附近发现,其指纹是有效钉扎的突然上升,被称为“峰值效应”,其起源至今仍存在争议。在这篇综述中,我们重新评估了过去二十年中提出的一组结果,这使您可以构建一张全面的图片来描述旋涡物质中的热和动态历史效应,振荡动力学,相关的动态重组以及其与交流去钉动力的关系。相变。

更新日期:2020-11-25
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