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Tracing Vortex Clustering in a Superconductor by the Magnetic Flux Distribution.

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Investigating superconductors reveals that vortex clustering, a key characteristic of the intermediate mixed state, can be identified by analyzing the distribution of penetrating magnetic fields. This distribution

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Area of Science:

  • Condensed matter physics
  • Materials science

Background:

  • Superconductors exhibit unique states, including the intermediate mixed state.
  • Understanding vortex behavior is crucial for superconductor applications.

Purpose of the Study:

  • To characterize vortex clustering in the intermediate mixed state of intertype superconductors.
  • To establish a method for identifying vortex clustering using magnetic field distributions.

Main Methods:

  • Investigation of spatial configurations within the intermediate mixed state.
  • Analysis of the sample-averaged distribution of the penetrating magnetic field.

Main Results:

  • Vortex clustering is directly characterized by the distribution of the penetrating magnetic field.
  • A two-peak structure in the magnetic field distribution signifies vortex clustering.
  • The position of the second peak correlates with the material's phase diagram in superconductivity types.

Conclusions:

  • The observed two-peak distribution provides a general method to identify vortex clustering.
  • This characterization is independent of specific model details.
  • The findings offer insights into the phase diagram of superconductor types.