Origin of the R-ion effect on Tc in RBa2Cu3O7

J. G. Lin, C. Y. Huang, Y. Y. Xue, C. W. Chu, X. W. Cao, J. C. Ho

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112 Citations (Scopus)


Tc and dTc/dP have been systematically measured for fully oxygenated RBa2Cu3O7-δ (R-123) with R=Yb, Tm, Ho, Dy, Gd, Sm, and Nd. Tc has been observed to increase from 88 to 94 K with increasing radius of the R ion (r) from 0.98 to 1.12. Based on the lattice strains and our dTc/dP data, we have calculated Tc for the series of R-123 and compared them with the measured Tc. Good agreement between the experimental and the calculated results strongly suggests that the R effect on Tc in R-123 originates from the strain-induced charge redistribution between the charge reservoir and the CuO2 plane.

Original languageEnglish
Pages (from-to)12900-12903
Number of pages4
JournalPhysical Review B
Issue number18
Publication statusPublished - 1995

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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