Abstract
The normal state out of which unconventional superconductivity in UTe2 emerges is studied in detail using a variety of thermodynamic and transport probes. Clear evidence for a broad Schottky-like anomaly with roughly Rln2 entropy around T∗≈12 K is observed in all measured quantities. Comparison with high magnetic field transport data allows the construction of an H-T phase diagram resembling that of the ferromagnetic superconductor URhGe. The low-field electronic Grüneisen parameter of T∗ and that of the metamagnetic transition at Hm≈35 T are comparable pointing to a common origin of both phenomena. Enhanced Wilson and Korringa ratios suggest that the existence of short-range ferromagnetic fluctuations cannot be ruled out.
Original language | English |
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Article number | 205107 |
Journal | Physical Review B |
Volume | 104 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2021 Nov 15 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics