INFRARED AND RAMAN-SPECTROSCOPY OF ND2CUO4-BASED SUPERCONDUCTORS

被引：42

作者：

CRAWFORD, MK ^{[1
]}

BURNS, G ^{[1
]}

CHANDRASHEKHAR, GV ^{[1
]}

DACOL, FH ^{[1
]}

FARNETH, WE ^{[1
]}

MCCARRON, EM ^{[1
]}

SMALLEY, RJ ^{[1
]}

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,DIV RES,YORKTOWN HTS,NY 10598

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.41.8933

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report infrared and Raman measurements of phonons in the recently discovered electron-doped superconductors Nd2-x(Ce, Th)xCuO4, and undoped Nd2CuO4. Utilizing data from ceramics and ab-plane single crystals, we have identified all of the expected infrared-active modes (3A2u+4Eu). We have also observed the Raman modes for motion along the c axis in the pure and doped materials. Based on our data and group theory, we assign the observed phonons. Finally, we compare the phonons in this class of materials to those of the related hole superconductors based upon La2CuO4. © 1990 The American Physical Society.

引用

页码：8933 / 8936

页数：4

共 14 条

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