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Related Concept Videos

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Preparation of Free-Surface Hyperbolic Water Vortices
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Yin-Yang vortex on UTe2 (011) surface.

Ruotong Yin1, Yuanji Li1, Zengyi Du2

  • 1Hefei National Research Center for Physical Sciences at the Microscale and Department of Physics, University of Science and Technology of China, Hefei, China.

Nature Communications
|April 18, 2026
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Summary
This summary is machine-generated.

Researchers discovered a novel magnetic vortex in Uranium Ditelluride (UTe2) using scanning tunneling microscopy. This finding provides key evidence for UTe2

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Materials

Background:

  • Uranium Ditelluride (UTe2) is a prime candidate for spin-triplet superconductivity.
  • The precise nature of its superconducting state and pairing symmetry remains under investigation.
  • Understanding the interplay between surface states and superconductivity is crucial for novel quantum phenomena.

Purpose of the Study:

  • To investigate the superconducting state of UTe2 using advanced surface-sensitive techniques.
  • To characterize the behavior of magnetic vortices in UTe2 under applied magnetic fields.
  • To provide experimental evidence for spin-triplet pairing and explore topological surface states.

Main Methods:

  • Utilizing scanning tunneling microscopy and spectroscopy (STM/STS) on the UTe2 (011) surface.
  • Applying perpendicular magnetic fields to induce and probe magnetic vortices.
  • Analyzing the local density of states (LDOS) and conductance spectra within the vortices.

Main Results:

  • Observation of a novel magnetic vortex with a distinct Yin-Yang contrast in the LDOS.
  • Quantized magnetic flux within each vortex, with a boundary aligned to the crystallographic a-axis.
  • Asymmetric vortex states: 'Yang' part shows a zero-energy peak, 'Yin' part exhibits a gapped superconducting state with enhanced coherence peaks.
  • Theoretical analysis links the observed pattern to vortex-induced suppression of topological surface states.

Conclusions:

  • The observed vortex behavior provides distinctive experimental evidence supporting spin-triplet pairing in UTe2.
  • The findings suggest a significant role for topological surface states in the superconductivity of UTe2.
  • This study opens new avenues for exploring the interplay between surface states and vortex-bound states in topological superconductors.