CRYSTAL-FIELD RAMAN-SCATTERING IN ND2CUO4

被引：51

作者：

JANDL, S ^{[1
]}

ILIEV, M ^{[1
]}

THOMSEN, C ^{[1
]}

RUF, T ^{[1
]}

CARDONA, M ^{[1
]}

WANKLYN, BM ^{[1
]}

CHEN, C ^{[1
]}

机构：

[1] UNIV OXFORD,DEPT PHYS,CLARENDON LAB,DEPT PHYS,OXFORD OX1 3PU,ENGLAND

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 87卷 / 07期

关键词：

D O I：

10.1016/0038-1098(93)90122-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Raman scattering involving transitions between the components of the ground I-4(9/2) and the excited I-4(11/2) multiplets of Nd3+ in Nd2CuO4 is reported. The energies and symmetries of all five I-4(9/2) and five of the Six I-4(11/2) were determined. Direct Raman coupling to the crystal field excitations occurs (contrary to NdBa2Cu3O7, where the coupling occurs through phonon admixture), possibly because of the lack of inversion symmetry of the Nd sites. At low temperatures a coupling was observed between the crystal-field excitation near 119 cm-1 and a Nd-vibration. Below 150 K the crystal-field excitations exhibit a temperature-independent splitting (3 - 5 cm-1), possibly related to the presence of two Nd atoms per primitive cell.

引用

页码：609 / 612

页数：4

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