Coexistence of ferromagnetic fluctuations and superconductivity in the actinide superconductor UTe2.
Phys Rev B
; 100(14)2019 Oct.
Article
em En
| MEDLINE
| ID: mdl-34131607
ABSTRACT
We report low-temperature muon spin relaxation/rotation (µSR) 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 µSR measurements also indicate that the superconductivity coexists with the magnetic fluctuations.
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MEDLINE
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En
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2019
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Article