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Relationship between the new superconductors and two-or three-dimensional antiferromagnetism.

Author(s) : BURGER J. P., ZANOUN Y.

Type of article: Article

Summary

With the classical superconductors there is nearly always an opposition with the local or itinerant magnetism. For the new superconductors there is a coexistence regime with the two-dimensional copper antiferromagnetism of short coherence length, a fact which can be related to a new attractive interaction due to magnetic fluctuations. However, the opposition between this new superconducting state and the three-dimensional antiferromagnetism is analyzed as a function of a factor proportional to the density of conduction electrons or holes, through the Ginzburg-Landau opposition term between the two order parameters: beyond a critical value there can be no overlap of the two transition temperatures with nevertheless a common border observed for neodymium(2-x)cerium(x)copper-oxide(4).

Details

  • Original title: Relationship between the new superconductors and two-or three-dimensional antiferromagnetism.
  • Record ID : 1992-2541
  • Languages: English
  • Source: C. R. Acad. Sci., Sér. II - vol. 314 - n. 8-9
  • Publication date: 1992/04
  • Document available for consultation in the library of the IIR headquarters only.

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