特集：「非従来型超伝導体の最前線」
スピン三重項超伝導体UTe2の高圧下多重超伝導相
キーワード:
piston cylinder cell,
ac calorimetry,
multiple superconductivity,
spin-triplet state,
reentrant superconductivity,
UTe2
2025 年 35 巻 4 号 p. 204-211
詳細
2025 年 35 巻 4 号 p. 204-211
We report recent experimental results on multiple superconducting phases in the spin-triplet superconductor UTe₂, revealed by ac calorimetry under pressure. When a small hydrostatic pressure is applied, the superconducting transition splits into two distinct temperatures, indicating the emergence of multiple superconducting phases. Furthermore, magnetic fields applied along either the easy or hard magnetization axis induce a rich variety of superconducting phases, reflecting the spin and orbital degrees of freedom inherent to the spin-triplet state.
