High-pressure study of RSr2Cu2.7Mo0.3Oy with R=Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb

Q. Xiong, Y. Y. Xue, J. W. Chu, Y. Y. Sun, Y. Q. Wang, P. H. Hor, C. W. Chu

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34 引文 斯高帕斯(Scopus)

摘要

The hydrostatic-pressure effect on the superconducting transition temperature (Tc) of the stabilized Sr-based 1:2:3 compounds RSr2Cu2.7Mo0.3Oy with R=Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb has been determined up to 16 kbar. All Tc's are enhanced linearly by pressure at a rather rapid rate (dTc/dP). A drastic jump in dTc/dP vs ionic radius of R occurs near Dy, i.e., dTc/dP∼0.7 K/kbar for small R=Ho, Er, Tm, and Yb, and ∼0.4 K/kbar for the larger R's=Tb, Gd, Eu, and Sm. The results suggest that Cu(1) substitution by Mo is crucial in the stabilization of the Sr-based 1:2:3 compound. Several possibilities for the dTc/dP step detected are advanced.

原文English
頁(從 - 到)11337-11340
頁數4
期刊Physical Review B
47
發行號17
DOIs
出版狀態Published - 1993

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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