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Related Concept Videos

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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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
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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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Tetrahedral Complexes
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Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
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Superconductivity in a layered Ta4Pd3Te16 with PdTe2 chains.

Wen-He Jiao1, Zhang-Tu Tang, Yun-Lei Sun

  • 1Department of Physics, ‡State Key Lab of Silicon Materials and §Center of Electron Microscope, Zhejiang University , Hangzhou 310027, China.

Journal of the American Chemical Society
|January 17, 2014
PubMed
Summary

Researchers discovered superconductivity in the low-dimensional ternary telluride Ta4Pd3Te16. Bulk superconductivity was observed at 4.6 K, indicating significant electron-electron interactions for Cooper pairing.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid-State Chemistry

Background:

  • Superconductivity in low-dimensional compounds is a significant area of research.
  • Ternary tellurides offer unique structural and electronic properties for exploring novel superconducting phenomena.

Purpose of the Study:

  • To investigate the superconducting properties of the low-dimensional ternary telluride Ta4Pd3Te16.
  • To characterize the mechanism of superconductivity in this novel material.

Main Methods:

  • Crystal growth of Ta4Pd3Te16 using a self-flux method.
  • Electrical resistivity, magnetic susceptibility, and specific heat measurements.
  • Analysis of crystal structure, focusing on edge-sharing PdTe2 chains.

Main Results:

  • Bulk superconductivity was confirmed in Ta4Pd3Te16 crystals at a critical temperature of 4.6 K.
  • Measurements consistently demonstrated superconducting behavior.
  • Evidence for significant electron-electron interactions was found.

Conclusions:

  • Ta4Pd3Te16 is a novel bulk superconductor.
  • The observed superconductivity is attributed to electron-electron interactions enabling Cooper pairing.
  • This discovery opens new avenues for research in low-dimensional superconductors.