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Evaluation of CuO2 plane hole doping in YBa2Cu3O6+x single crystals

Ruixing Liang, D. A. Bonn, and W. N. Hardy
Phys. Rev. B 73, 180505(R) – Published 25 May 2006

Abstract

The electron hole concentration p in the CuO2 planes of YBa2Cu3O6+x (YBCO) has been evaluated using the unit cell length in the c direction together with a simple estimation for p in the chain oxygen-ordered phases. The empirical relationship between p and c obtained allows the calculation of p from the c-axis lattice parameter for the entire doping range of YBCO. It is also suggested that the empirical parabola describing the relationship between Tc and p in La2xSrxCuO4 is reasonably correct for YBCO except for the region around p=18(x=0.67), where the Tc of YBCO is suppressed by as much as 17K. A plot of p vs x and a correction of the parabola for the p=18 effect are presented, allowing convenient determination of p from x and Tc.

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  • Received 24 October 2005

DOI:https://doi.org/10.1103/PhysRevB.73.180505

©2006 American Physical Society

Authors & Affiliations

Ruixing Liang, D. A. Bonn, and W. N. Hardy

  • Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia V6T 1Z1, Canada

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Issue

Vol. 73, Iss. 18 — 1 May 2006

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