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1995106 citationsJournal Article

Authors

J. G. Lin · National Taiwan University

Chao‐Yuan Huang · National Taiwan University

Y. Y. Xue · University of Houston

C. W. Chu · Executive Office of the President

Xi-min Cao · National Taiwan University

Joe Ho · Wichita State University

Abstract

${\mathit{T}}_{\mathit{c}}$ and ${\mathit{dT}}_{\mathit{c}}$/dP have been systematically measured for fully oxygenated R${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ (R-123) with R=Yb, Tm, Ho, Dy, Gd, Sm, and Nd. ${\mathit{T}}_{\mathit{c}}$ has been observed to increase from 88 to 94 K with increasing radius of the R ion (r) from 0.98 to 1.12 \AA{}. Based on the lattice strains and our ${\mathit{dT}}_{\mathit{c}}$/dP data, we have calculated ${\mathit{T}}_{\mathit{c}}$ for the series of R-123 and compared them with the measured ${\mathit{T}}_{\mathit{c}}$. Good agreement between the experimental and the calculated results strongly suggests that the R effect on ${\mathit{T}}_{\mathit{c}}$ in R-123 originates from the strain-induced charge redistribution between the charge reservoir and the ${\mathrm{CuO}}_{2}$ plane.

Topics & Keywords

Advanced Condensed Matter Physics Magnetic and transport properties of perovskites and related materials Multiferroics and related materials

Publication Details

Published in: Physical review. B, Condensed matter

Volume 51, Issue 18, pp. 12900-12903

DOI: 10.1103/physrevb.51.12900

Field-Weighted Citation Impact: 5.47

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