Thermally activated flux flow of vortex liquid and suppression of vortex glass in Ca10(Pt4As8)(Fe2As2)5

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physics and Chemistry of Solids Pub Date : 2025-04-22 DOI:10.1016/j.jpcs.2025.112803

Beopgil Cho , Jaemun Park , W.J. Choi , Keeseong Park, Yong Seung Kwon

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Abstract

To investigate the presence and role of magnetic fluctuations below the superconducting transition temperature in Ca₁₀(Pt₄As₈)(Fe₂As₂)₅ superconductors, which exhibit static non-magnetic behavior and linear temperature-dependent electrical resistivity in the normal state, we conducted detailed measurements of electrical resistivity under magnetic fields applied along the c-axis (H//c) and the ab-plane (H//ab) to analyze the vortex creep behavior. For H//c, vortex liquid and low-temperature vortex glass phases were observed, similar to those in typical iron pnictide superconductors. In contrast, for H//ab, no vortex glass phase was observed at low temperatures, but instead, a vortex liquid phase extended over a wide temperature range was observed. This behavior has never been reported in iron pnictide systems. This suppression of the vortex glass phase is attributed to the presence of antiferromagnetic fluctuations within the superconducting dome.

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Ca10(Pt4As8)（Fe2As2）中涡状液体的热激活通量流动及涡状玻璃的抑制

为了研究Ca10(Pt4As8)(Fe2As2)5超导体在超导转变温度以下磁波动的存在及其作用，我们对沿c轴（H//c）和ab面（H//ab）施加磁场的电阻率进行了详细测量，以分析涡旋蠕变行为。Ca10(Pt4As8)(Fe2As2)5超导体在正常状态下具有静态非磁性和线性温度相关的电阻率。对于H//c，观察到与典型镍铁超导体相似的涡旋液相和低温涡旋玻璃相。而对于H//ab，在低温下没有观察到涡旋玻璃相，而是在较宽的温度范围内观察到涡旋液相。这种行为从未在铁嘌呤系统中报道过。涡旋玻璃相的抑制是由于超导圆顶内存在反铁磁波动。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Physics and Chemistry of Solids 工程技术-化学综合

CiteScore

7.80

自引率

2.50%

发文量

605

审稿时长

40 days

期刊介绍： The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.