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arXiv 1605.00524cond-mat.supr-concond-mat.soft
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层状超导体中多尺度涡旋间相互作用涡旋物质的Phase diagrams

Phase diagrams of vortex matter with multi-scale inter-vortex interactions in layered superconductors

Qingyou Meng, Christopher N. Varney, Hans Fangohr, Egor Babaev

摘要:

最近有人提出利用超导涡旋晶格中的杂散磁场来捕获超冷原子,以构建量子模拟器。这就需要新的方法来设计和操纵涡旋状态。一种可能的途径是利用具有多尺度涡间相互作用的1.5型超导分层系统。为了探索可能的涡旋状态,可以工程,我们提出了两个相图的现象学涡旋物质模型具有多尺度的相互作用的涡旋具有几个吸引力和排斥力的长度尺度。相图显示出过多的相,包括传统的2D晶格相,五条纹相,二聚体,三聚体和四聚体相,空隙相,和稳定的低温无序相。这些状态之间的转换可以通过施加的外部场的值来控制。

英文摘要:

It was recently proposed to use the stray magnetic fields of superconducting vortex lattices to trap ultracold atoms for building quantum emulators. This calls for new methods for engineering and manipulating of the vortex states. One of the possible routes utilizes type-1.5 superconducting layered systems with multi-scale inter-vortex interactions. In order to explore the possible vortex states that can be engineered, we present two phase diagrams of phenomenological vortex matter models with multi-scale inter-vortex interactions featuring several attractive and repulsive length scales. The phase diagrams exhibit a plethora of phases, including conventional 2D lattice phases, five stripe phases, dimer, trimer, and tetramer phases, void phases, and stable low-temperature disordered phases. The transitions between these states can be controlled by the value of an applied external field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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