ORIGIN OF THE R-ION EFFECT ON T-C IN RBA(2)CU(3)O(7)

被引：98

作者：

LIN, JG

HUANG, CY

XUE, YY

CHU, CW

CAO, XW

HO, JC

机构：

[1] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204

[2] WICHITA STATE UNIV,DEPT PHYS,WICHITA,KS 67260

[3] WICHITA STATE UNIV,NATL INST AVIAT RES,WICHITA,KS 67260

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.51.12900

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. © 1995 The American Physical Society.

引用

页码：12900 / 12903

页数：4

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