8 papers
Boosted magnetic fluctuations at the onset of superconductivity in UTe beyond 40 T
T. Thebault, K. Somesh, G. Lapertot +11
Several unconventional superconducting phases have been discovered close to a metamagnetic transition in the heavy-fermion compound UTe. Although suspected to be of magnetic na…
Fermi-liquid versus non-Fermi-liquid/'strange-metal' fits to the electrical resistivity in the quantum critical magnetic regime of an unconventional superconductor
W. Knafo, T. Thebault, K. Somesh +4
The question of a possible quantum critical point lying inside of a superconducting phase is central for understanding unconventional superconductivity. In various unconventional s…
Quantitative thermodynamic study of superconducting and normal states in UTe2 under pressure
T. Vasina, M. Pfeiffer, R. Borth +7
We report a quantitative calorimetric study of UTe2 under pressure with a direct measurement of the Sommerfeld gamma coefficient, showing a three-fold enhancement of electronic eff…
Bridging atomic and mesoscopic length scales with Replica Scanning Tunneling Microscopy: Visualizing the atomic lattice of UTe and the atomic scale superconducting gap modulations of FeSe close to micron length scales
Miguel Ãgueda Velasco, Miguel Águeda Velasco, Jose D. Bermúdez-Pérez +21
Scanning Tunneling Microscopy is a cornerstone technique for visualizing the electronic density of states with atomic resolution (typically below 0.1 nm). While the field of view o…
Bulk signatures of re-entrant superconductivity in UTe from ultrasound measurements
N. Marquardt, C. Duffy, C. Proust +7
We report bulk ultrasound measurements up to 80 T and down to 0.5 K of the field re-entrant superconducting phase of the unconventional superconductor UTe. Clear bulk signature…
Anisotropic collapse of electronic correlations in the ferromagnet UGe under high magnetic field
K. Somesh, T. Thebault, V. Taufour +5
We present electrical-resistivity measurements on the prototypical heavy-fermion ferromagnet UGe under pulsed magnetic field up to 60~T. An anisotropic field-induced suppressio…