Raman scattering of the charge-spin stripes in La1.67Sr0.33NiO4

被引：61

作者：

Yamamoto, K ^{[1
]}

Katsufuji, T ^{[1
]}

Tanabe, T ^{[1
]}

Tokura, Y ^{[1
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Tokyo 113, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.80.1493

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Raman scattering spectra have been investigated for a single crystal of La1.67Sr0.33NiO4 which shows stripe ordering of charge (T-c = 230 K) and spin (T-s = 180 K). Upon the charge ordering, the activated phonon peaks grow with the evolution of the charge modulation amplitude, while the electronic Raman continuum of the metallic state abruptly disappears. The two broad peaks with the B-1g, symmetry arising from the two-magnon excitations emerge immediately below T-c,, indicating the evolution of the two-dimensional antiferromagnetic spin correlation in the charge-ordered state even above T-s,. [S0031-9007(98)05303-4].

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页码：1493 / 1496

页数：4

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