RAMAN MEASUREMENTS OF Y1-XEUXBA2CU3O7 - COMPARISON WITH Y1-XPRXBA2CU3O7

被引：15

作者：

YANG, IS

BURNS, G

DACOL, FH

BRINGLEY, JF

TRAIL, SS

机构：

[1] IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598

来源：

PHYSICA C | 1990年 / 171卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(90)90452-K

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present polarized Raman measurements of small single crystals embedded in Y1-xEuxBa2Cu3O7 polycrystalline pellets. Superconductivity remains unsuppressed through the entire range of x. With increasing x, the frequency increase of the Ba-Ba vibrational mode and the apical oxygen Oz-Oz vibrational mode, is significantly smaller than in Y1-xPrxBa2 Cu3O7, even though similar changes in interatomic distances occur in both systems. These results support the assertion that the frequency changes of Ba-Ba and Oz-Oz modes are due to changes in electronic states and not due to interatomic distances. © 1990.

引用

页码：31 / 36

页数：6

共 15 条

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