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Updated: Nov 2, 2025

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
Published on: July 8, 2021
Coexistence of ferromagnetic fluctuations and superconductivity in the actinide superconductor UTe2
Shyam Sundar1, S Gheidi1, K Akintola1
1Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6.
Abstract:
We report low-temperature muon spin relaxation/rotation (microSR) measurements on single crystals of the actinide superconductor UTe2. Below 5 K we observe a continuous slowing down of magnetic fluctuations that persists through the superconducting transition temperature (T c = 1.6 K), but we find no evidence of long-range or local magnetic order down to 0.025 K. The temperature dependence of the dynamic relaxation rate down to 0.4 K agrees with the self-consistent renormalization theory of spin fluctuations for a three-dimensional weak itinerant ferromagnetic metal. Our microSR measurements also indicate that the superconductivity coexists with the magnetic fluctuations.
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