Bulk signatures of re-entrant superconductivity in UTe${}_2$ 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${}_2$. Clear bulk signature…