arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2007.09931cond-mat.supr-con
收藏

FeSe$_{1-x}$S$_x$体系中涡旋钉扎的演化

Evolution of vortex pinning in the FeSe$_{1-x}$S$_x$ system

V. A. Vlasenko, A. V. Sadakov, T. A. Romanova, S. U. Gavrilkin, A. V. Dik, O. A. Sobolevskiy, B. I. Massalimov, D. A. Chareev, A. N. Vasiliev, E. I. Maltsev, T. E. Kuzmicheva

AI总结:

该研究全面分析了不同掺杂FeSe$_{1-x}$S$_x$体系的涡旋钉扎演化,揭示了多钉扎贡献的复杂相互作用,发现FeSe涡旋液-玻璃转变的准二维特性,且上临界场高于WHH模型预测并符合双带框架,还给出了详细H-T相图。

摘要:

我们对不同掺杂程度的FeSe$_{1-x}$S$_x$体系中的涡旋物质及钉扎演化进行了全面研究,探究了硫取代对涡旋钉扎及峰值效应出现的影响。研究表明,FeSe$_{1-x}$S$_x$体系中存在多种钉扎贡献间的复杂相互作用;还研究了可能的涡旋液体-涡旋玻璃/晶格转变,发现FeSe的该转变具有准二维特性的证据;探究了体系的上临界场行为,发现其高于Werthamer-Helfand-Hohenberg(WHH)模型预测值,且温度依赖性可在双带框架内拟合;最后呈现了详细的H-T相图。

英文摘要:

We present a comprehensive study of vortex matter and pinning evolution in the FeSe$_{1-x}$S$_x$ system with various doping degree. The influence of sulphur substitution on vortex pinning and peak effect occurrence is studied. We show that there is a complex interplay among various pinning contributions in the FeSe$_{1-x}$S$_x$ system. Additionally, we study a possible vortex liquid-vortex glass/lattice transition and find an evidence that the vortex liquid-vortex glass phase transition in FeSe has a quasi two-dimensional nature. We investigate the upper critical field behaviour in FeSe$_{1-x}$S$_x$ system, and found that the upper critical field is higher than that predicted by the Werthamer-Helfand-Hohenberg (WHH) model, whereas its temperature dependence could be fitted within a two-band framework. Finally, a detailed H-T phase diagram is presented.

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。

↑