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Correlation of Tc with hole concentration in La2xSrxCuO4δ superconductors

M. W. Shafer, T. Penney, and B. L. Olson
Phys. Rev. B 36, 4047(R) – Published 1 September 1987
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Abstract

The electron deficiency (hole concentration) in the La2xSrxCuO4δ system is determined by a chemical method. Our results show a direct correlation between Tc and hole concentration. The hole concentration equals the Sr concentration to about x=0.15. For x>0.15, the hole concentration decreases and oxygen vacancies are formed. These results strongly support an all-electronic mechanism for superconductivity in this system.

  • Received 8 June 1987

DOI:https://doi.org/10.1103/PhysRevB.36.4047

©1987 American Physical Society

Authors & Affiliations

M. W. Shafer, T. Penney, and B. L. Olson

  • IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598

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Issue

Vol. 36, Iss. 7 — 1 September 1987

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