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Types Of Superconductors01:28

Types Of Superconductors

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A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
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A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
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Related Experiment Video

Updated: May 20, 2025

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
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Connecting High-Field and High-Pressure Superconductivity in UTe_{2}.

T Vasina1, D Aoki2, A Miyake2

  • 1Grenoble INP, CEA, Université Grenoble Alpes, IRIG, PHELIQS, F-38000 Grenoble, France.

Physical Review Letters
|March 25, 2025
PubMed
Summary
This summary is machine-generated.

Multiple superconducting phases in Uranium Ditelluride (UTe2) were investigated. The high-field phase transitions into the zero-field, high-temperature phase under pressure, revealing a continuous evolution of the superconducting phase diagram.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Superconductivity

Background:

  • Uranium Ditelluride (UTe2) exhibits unusual superconducting properties, including multiple superconducting phases.
  • Understanding the interplay between pressure, magnetic fields, and superconductivity in UTe2 is crucial.

Purpose of the Study:

  • To comprehensively map the superconducting phase diagram of UTe2 under combined pressure and magnetic fields.
  • To investigate the evolution of different superconducting phases in UTe2.

Main Methods:

  • Thermodynamic measurements were performed on UTe2.
  • The experiments combined hydrostatic pressure and high magnetic fields up to 30 Tesla.

Main Results:

  • A continuous evolution was observed between the high-field superconducting phase at ambient pressure and the zero-field, high-temperature superconducting phase above 0.2 GPa.
  • The study reveals a detailed superconducting phase diagram for UTe2.

Conclusions:

  • The superconducting phase diagram of UTe2 is highly sensitive to both pressure and magnetic fields.
  • The findings provide new insights into the complex nature of superconductivity in UTe2 and its multiple phases.