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Research Highlight | Materials Science Division

Mysterious Hall effect sign reversal in superconductors explained

In a study published in the Physical Review Letters, researchers resolve the long-standing puzzle of the origin of the Hall effect sign reversal in superconductors.

Scientific Achievement

The decades-long standing puzzle of the origin of the Hall effect sign reversal in superconductors is resolved.

Significance and Impact

Our findings offer conclusive evidence that the existing theory provides a quantitative description of electric properties of type II superconductors.

Research Details

  • Developed a technique to fabricate atomically-thin van der Waals BSCCO films with bulk superconducting temperature.
  • A double sign change of Hall resistance with reversed sign spanning both below and above Tc is observed.
  • A quantitative agreement between the experiment and the vortex dynamics-based description of the Hall effect is found.

DOI10.1103/PhysRevLett.122.247001

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