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THEORY OF SUPERCONDUCTIVITY AT HIGH TEMPERATURES.

Author(s) : BROYLES A. A., TELLER E., WILSON B. G.

Type of article: Article

Summary

IN HIGH-TEMPERATURE SUPERCONDUCTIVITY THE PAIRS CONSIST OF HYBRIDS IN WHICH THE TOP OF THE OXYGEN BAND OF THE CROWDED PEROVSKITE LAYER IS MIXED WITH THE BOTTOM OF UNOCCUPIED D-OR F-BANDS FROM MONOXIDE LAYERS IN THE CRYSTAL. ONLY ELECTRONS AND PHONONS WITH LOW QUASI-MOMENTUM VALUES PARTICIPATE. THIS MAKES IT POSSIBLE TO LOCALIZE THE LATTICE PERTURBATION INTO BROAD REGIONS IN WHICH THE VAN DER WAALS FORCES ARE REDUCED AND THE PEROVSKITE PLANES ARE CONTRACTED. THE LOW ENTROPY STATE ASSOCIATED WITH SUPERCONDUCTIVITY MANIFESTS ITSELF AS THE FORMATION OF A SUPERLATTICE OF LATTICE DISTORTIONS WHICH IS IN ACTUAL MOTION IN THE CURRENT-CARRYING STATES.

Details

  • Original title: THEORY OF SUPERCONDUCTIVITY AT HIGH TEMPERATURES.
  • Record ID : 1991-2386
  • Languages: English
  • Subject: General information
  • Source: J. Supercond. - vol. 3 - n. 2
  • Publication date: 1990/06
  • Document available for consultation in the library of the IIR headquarters only.

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