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Robust zero resistance in a superconducting high-entropy alloy at pressures up to 190 GPa

Author(s): Guo, Jing; Wang, Zhe; Von Rohr, Fabian O.; Wang, Honghong; Cai, Shu; et al

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Abstract: 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.
Publication Date: 12-Dec-2017
Citation: Guo, J., Wang, H., Von Rohr, F., Wang, Z., Cai, S., Zhou, Y., Yang, K., Li, A., Jiang, S., Wu, Q., Cava, R.J., Sun, L.. (2017). Robust zero resistance in a superconducting high-entropy alloy at pressures up to 190 GPa. Proceedings of the National Academy of Sciences of the United States of America, 114 (50), 13144 - 13147. doi:10.1073/pnas.1716981114
DOI: doi:10.1073/pnas.1716981114
ISSN: 0027-8424
EISSN: 1091-6490
Pages: 13144 - 13147
Type of Material: Journal Article
Journal/Proceeding Title: Proceedings of the National Academy of Sciences of the United States of America
Version: Final published version. This is an open access article.
Notes: Proceedings of the National Academy of Sciences of the United States of America. Volume 114, Issue 50, 12 December 2017, Pages 13144-13147. PNAS December 12, 2017 114 (50) 13144-13147; first published November 28, 2017 https://doi.org/10.1073/pnas.1716981114. This open access article is distributed under Creative Commons Attribution-Non Commercial No Derivatives License 4.0 (CC BY-NC-ND).



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