Raman study of crystal-field excitations in Nd1.85Ce0.15CuO4

被引：31

作者：

Jandl, S

Dufour, P

Strach, T

Ruf, T

Cardona, M

Nekvasil, V

Chen, C

Wanklyn, BM

Pinol, S

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH, D-70569 STUTTGART, GERMANY

[2] ACAD SCI CZECH REPUBL, INST PHYS, CR-16200 PRAGUE 6, CZECH REPUBLIC

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

[4] UNIV AUTONOMA BARCELONA, INST CIENCIA MAT, E-08193 BARCELONA, SPAIN

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.53.8632

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eighteen Raman active crystal-field (CF) excitations were detected in Nd1.85Ce0.15CuO4. They correspond to transitions within the I-4(9/2), I-4(11/2), and I-4(13/2) multiplets associated with the inequivalent sites of the Nd3+ ion. Three sets of CF parameters which describe the observed energy spectra were derived. One of the three Nd3+ sets describes levels which are very similar to those observed in Nd2CuO4 while the two others correspond to sites affected by the cerium doping. Kramers doublet splitting is also present indicating that antiferromagnetism persists in the CuO2 planes even with 7.5% cerium doping.

引用

页码：8632 / 8637

页数：6

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