通过氧化物辅助的化学蒸汽运输来增强WP中的超导性

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Daniel J Campbell¹, Wen-Chen Lin¹, John Collini¹

¹Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, MD 20742, USA.

Materials (Basel, Switzerland)

|October 16, 2025

概括

我们使用化学蒸汽运输生长了单 (WP) 单晶,达到1K以上的超导.这种方法减少了散射,增强了3D结构,为非传统的超导提供了新的见解.

科学领域:

固态物理固态物理
材料科学材料科学材料科学
超导电性超导电性超导电性

背景情况:

单 (WP) 具有0.8K以下的超导性.
理论研究表明,WP中存在一种非常规的Cooper配对机制.

研究的目的:

使用化学蒸汽传输 (CVT) 合成高质量的WP单晶.
研究WP的超导特性,重点关注过渡温度 (Tc) 以及它与材料形态和散射的关系.
探索WP中Tc变化的潜在原因,例如竞争的订单或非s波配对.

主要方法:

单 (WP) 的单晶使用化学蒸汽运输 (CVT) 与WO3,P和I2一起生长.
测量了电阻超导过渡以确定临界温度 (Tc).
将CVT培养的样本与从WP粉末中合成的样本进行比较.

主要成果:

与粉末合成相比,CVT方法产生了WP单晶,显著减少了低温散射,并且具有更多的三维形态.
在CVT培养的WP样本中,电阻超导过渡开始在1K以上,超过了之前报告的Tc值.
观察到的Tc变化表明竞争的电子顺序或非s波超导间隙的潜在影响.

结论:

化学蒸汽运输是生产具有增强超导性能的高质量单单晶的有效方法.
在CVT种植的WP中,较高的Tc和减少的散射支持对非传统超导机制的研究.
需要进一步的研究来阐明竞争秩序和间隙对称性在单化超导性中的作用.

关键词:

量子材料是一种量子材料.超导性是一种超导性.

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