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Article Dans Une Revue Communications Physics Année : 2019

Multiple superconducting phases in a nearly ferromagnetic system

Résumé

Abstract The nearly ferromagnetic superconductor UTe 2 shows several intriguing phenomena, including an extraordinary reinforcement of superconductivity in very strong magnetic fields. Here we show that pressure tunes the system to a more correlated state and probable magnetic order. The superconducting critical temperature is also strongly enhanced, reaching almost 3 K, a new record for U-based heavy fermion superconductors. Most spectacularly under pressure we find a transition within the superconducting state, putting UTe 2 among the very rare systems having multiple superconducting phases. UTe 2 under pressure is a treasure trove of several of the most fascinating phenomena in unconventional superconductivity and may well be a keystone in their understanding.

Dates et versions

hal-03956976 , version 1 (25-01-2023)

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D. Braithwaite, M. Vališka, G. Knebel, G. Lapertot, Jean-Pascal Brison, et al.. Multiple superconducting phases in a nearly ferromagnetic system. Communications Physics, 2019, 2 (1), pp.147. ⟨10.1038/s42005-019-0248-z⟩. ⟨hal-03956976⟩
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