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High-Tc superconductors in the two-dimensional limit:

Choy1, Kwon, Park

  • 1Jin-Ho Choy and Soon-Jae Kwon, Department of Chemistry, Center for Molecular Catalysis, College of Natural Sciences, Seoul National University, Seoul 151-742, Korea. Gyeong-Su Park, Samsung Advanced Institute of Technology, Post Office Box 111,

Science (New York, N.Y.)
|June 11, 1998
PubMed
Summary
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Researchers modified high-transition temperature (high-Tc) superconductors by inserting organic compounds. This increased interlayer distance but did not change the critical temperature, supporting a 2D superconducting mechanism.

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Solid State Chemistry

Background:

  • Layered high-transition temperature (high-Tc) superconductors are critical for scientific study and technological applications.
  • Controlling the distance between layers is key to understanding superconductivity mechanisms and material properties.

Purpose of the Study:

  • To investigate the effect of interlayer distance modulation on the superconducting properties of high-Tc cuprates.
  • To explore the potential of achieving two-dimensional (2D) superconductivity through intercalation.

Main Methods:

  • Intercalation of long-chain organic compounds into bismuth-based high-Tc cuprates.
  • Fabrication of layered superconducting materials with significantly increased interlayer distances.

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Main Results:

  • Successful intercalation of organic compounds into cuprates, expanding interlayer distances to tens of angstroms.
  • The superconducting transition temperature (Tc) of the intercalated materials remained comparable to the pristine, non-intercalated materials.

Conclusions:

  • The observed lack of Tc change despite increased interlayer distance supports the two-dimensional (2D) nature of high-Tc superconductivity in these materials.
  • Intercalation is a viable method for tuning the dimensionality of superconductors, offering insights into fundamental superconducting mechanisms.