RAMAN-STUDY OF KRAMERS DOUBLETS IN ND2CUO4

被引：27

作者：

DUFOUR, P

JANDL, S

THOMSEN, C

CARDONA, M

WANKLYN, BM

CHANGKANG, C

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH, W-7000 STUTTGART, GERMANY

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

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.51.1053

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Raman-scattering measurements involving the Nd3+-ion crystal field Kramers doublets in Nd2CuO4 are reported. The observed splitting is attributed to the lifting of the Kramers degeneracy by the Nd-Cu exchange interaction. Below 150 K the splitting of these crystal-field excitations is nearly temperature independent. There are also small discontinuities in the amplitude ratio of the doublet components at 30 and 75 K. These discontinuities can be intepreted as arising from the direction reversal of the Nd magnetic moment following the direction reversal of the copper exchange field at these phase transitions. © 1995 The American Physical Society.

引用

页码：1053 / 1057

页数：5

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