超导电性
配对
铀
材料科学
锕系元素
Crystal(编程语言)
凝聚态物理
单晶
电阻率和电导率
转变温度
产量(工程)
晶体结构
化学物理
结晶学
化学
核化学
物理
冶金
量子力学
程序设计语言
计算机科学
作者
Sheng Ran,I-Lin Liu,Shanta Saha,Prathum Saraf,Johnpierre Paglione,Nicholas P. Butch
摘要
Single crystal specimens of the actinide compound uranium ditelluride, UTe2, are of great importance to the study and characterization of its dramatic unconventional superconductivity, believed to entail spin-triplet electron pairing. A variety in the superconducting properties of UTe2 reported in the literature indicates that discrepancies between synthesis methods yield crystals with different superconducting properties, including the absence of superconductivity entirely. This protocol describes a process to synthesize crystals that exhibit superconductivity via chemical vapor transport, which has consistently exhibited a superconducting critical temperature of 1.6 K and a double transition indicative of a multi-component order parameter. This is compared to a second protocol that is used to synthesize crystals via the molten metal flux growth technique, which produces samples that are not bulk superconductors. Differences in the crystal properties are revealed through a comparison of structural, chemical, and electronic property measurements, showing that the most dramatic disparity occurs in the low-temperature electrical resistance of the samples.
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