文章基本信息

标题：Robust zero resistance in a superconducting high-entropy alloy at pressures up to 190 GPa
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作者：Jing Guo ; Honghong Wang ; Fabian von Rohr 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2017
卷号：114
期号：50
页码：13144-13147
DOI：10.1073/pnas.1716981114
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：We report the observation of extraordinarily robust zero-resistance superconductivity in the pressurized (TaNb)_0.67(HfZrTi)_0.33 high-entropy alloy––a material with a body-centered-cubic crystal structure made from five randomly distributed transition-metal elements. The transition to superconductivity ( T _C) increases from an initial temperature of 7.7 K at ambient pressure to 10 K at ∼60 GPa, and then slowly decreases to 9 K by 190.6 GPa, a pressure that falls within that of the outer core of the earth. We infer that the continuous existence of the zero-resistance superconductivity from 1 atm up to such a high pressure requires a special combination of electronic and mechanical characteristics. This high-entropy alloy superconductor thus may have a bright future for applications under extreme conditions, and also poses a challenge for understanding the underlying quantum physics.
关键词：superconductivity ; high pressure ; high-entropy alloy