非超导碲化镉 2 的静水压力研究

IF 1.5 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Journal of the Physical Society of Japan Pub Date : 2024-04-16 DOI:10.7566/jpsj.93.055001

M. O. Ajeesh, Joe D. Thompson, Eric D. Bauer, Filip Ronning, Sean M. Thomas, Priscila F. S. Rosa

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引用次数: 0

摘要

我们报告了一种 UTe2 单晶体的温压相图，这种单晶体没有发生体超导转变，而是显示出丝状超导性，在环境压力下临界转变温度为 1 K。电电阻率测量结果表明，丝状超导态在压力下的演化过程与之前关于块状超导样品的报告中观察到的行为相似。然而，交流量热法并没有显示出在高达 1.6 GPa 的压力下存在块状超导或磁性的证据。我们的研究结果凸显了化学气相传输生长的 UTe2 样品中不均匀性的作用，并为单独探测电阻率提供了警示。

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Hydrostatic Pressure Studies on Non-Superconducting UTe2

We report the temperature–pressure phase diagram of a UTe₂ single crystal that does not undergo a bulk superconducting transition but shows filamentary superconductivity with a critical transition temperature of 1 K at ambient pressure. Electrical-resistivity measurements reveal that the evolution of the filamentary superconducting state under pressure resembles the behavior observed in previous reports on bulk superconducting samples. AC calorimetry, however, does not show evidence for either bulk superconductivity or magnetism for pressures up to 1.6 GPa. Our results highlight the role of inhomogeneity in chemical-vapor-transport-grown UTe₂ samples and serve as a cautionary tale when probing electrical resistivity alone.

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来源期刊

Journal of the Physical Society of Japan 物理-物理：综合

CiteScore

3.40

自引率

17.60%

发文量

325

审稿时长

3 months

期刊介绍： The papers published in JPSJ should treat fundamental and novel problems of physics scientifically and logically, and contribute to the development in the understanding of physics. The concrete objects are listed below. Subjects Covered JPSJ covers all the fields of physics including (but not restricted to) Elementary particles and fields Nuclear physics Atomic and Molecular Physics Fluid Dynamics Plasma physics Physics of Condensed Matter Metal, Superconductor, Semiconductor, Magnetic Materials, Dielectric Materials Physics of Nanoscale Materials Optics and Quantum Electronics Physics of Complex Systems Mathematical Physics Chemical physics Biophysics Geophysics Astrophysics.