Superconducting critical temperature elevated by intense magnetic fields
成果类型：
Article
署名作者：
Wu, Z.; Chen, H.; Weinberger, T. I.; Cabala, A.; Graf, D. E.; Skourski, Y.; Xie, W.; Ling, Y.; Zhu, Z.; Sechovsky, V.; Valiska, M.; Grosche, F. M.; Eaton, A. G.
署名单位：
University of Cambridge; Charles University Prague; State University System of Florida; Florida State University; Helmholtz Association; Helmholtz-Zentrum Dresden-Rossendorf (HZDR); Huazhong University of Science & Technology
刊物名称：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN/ISSBN：
0027-13395
DOI：
10.1073/pnas.2422156122
发表日期：
2025-01-14
关键词：
摘要：
Below a critical temperature T-c, superconductors transport electrical charge without dissipative energy losses. The application of a magnetic field B generally acts to suppress Tc, up to some critical field strength at which T-c -> 0 K. Here, we investigate magnetic field-induced superconductivity in high-quality specimens of the triplet superconductor candidate UTe2 in pulsed magnetic fields up to B = 70 T. Strikingly, we find that this material has a higher T-c when B > 40 T (T-c approximate to 2.4 K) than it does for B = 0 T (T-c approximate to 2.1 K). This observation points to a fundamentally distinct mechanism for the formation of superconductivity at high B in UTe2 compared to the case of B = 0 T.