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Types Of Superconductors

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Updated: Oct 24, 2025

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
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Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

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Multicomponent superconducting order parameter in UTe2.

I M Hayes1, D S Wei2,3,4, T Metz5,1

  • 1Department of Physics, Quantum Materials Center, University of Maryland, College Park, MD 20742, USA.

Science (New York, N.Y.)
|August 13, 2021
PubMed
Summary
This summary is machine-generated.

Researchers discovered a unique superconducting state in uranium ditelluride (UTe2). This unconventional superconductivity features a two-component order parameter, breaking time-reversal symmetry and suggesting potential topological properties.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Materials

Background:

  • Uranium ditelluride (UTe2) exhibits an unconventional superconducting state emerging from a paramagnetic heavy-fermion normal state.
  • The coexistence of magnetic fluctuations and superconductivity in UTe2 suggests complex symmetries, magnetic properties, and potential topological characteristics.

Purpose of the Study:

  • To investigate the nature of the superconducting state in UTe2.
  • To determine the symmetries and properties of the superconducting order parameter.
  • To assess the potential for topological superconductivity in UTe2.

Main Methods:

  • Measurement of the polar Kerr effect to detect time-reversal symmetry breaking.
  • Specific heat measurements to identify phase transitions into the superconducting state.

Main Results:

  • Observation of a nonzero polar Kerr effect, indicating time-reversal symmetry breaking.
  • Detection of two distinct transitions in specific heat upon entering the superconducting state.
  • Evidence for a two-component superconducting order parameter in UTe2.

Conclusions:

  • The superconductivity in UTe2 is characterized by a two-component order parameter that breaks time-reversal symmetry.
  • The findings provide constraints on the order parameter's symmetries.
  • The results contribute to the ongoing discussion regarding topological superconductivity in UTe2.