Superconducting critical temperature elevated by intense magnetic fields

被引：0
|
作者：
Wu, Z. [1 ]
Chen, H. [1 ]
Weinberger, T. I. [1 ]
Cabala, A. [2 ]
Graf, D. E. [3 ]
Skourski, Y. [4 ]
Xie, W.
Ling, Y. [5 ]
Zhu, Z. [5 ]
Sechovsky, V. [2 ]
Valiska, M. [2 ]
Grosche, F. M. [1 ]
Eaton, A. G. [1 ]
机构：
[1] Univ Cambridge, Dept Phys, Cavendish Lab, Cambridge CB3 0HE, England
[2] Charles Univ Prague, Fac Math & Phys, Dept Condensed Matter Phys, Prague 2, Czech Republic
[3] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
[4] Helmholtz Zent Dresden Rossendorf, Hochfeld Magnetlabor Dresden HLD EMFL, D-01328 Dresden, Germany
[5] Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China
来源：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2025年 / 122卷 / 02期
关键词：
triplet superconductor; high magnetic; heavy fermion;
D O I：
10.1073/pnas.2422156122
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
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.
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