Spin-phonon interactions in the Raman spectra of one- and two-dimensional quantum spin antiferromagnets

被引：2

作者：

Sugai, S ^{[1
]}

Wada, J ^{[1
]}

Yamada, K ^{[1
]}

Hosoya, S ^{[1
]}

Endoh, Y ^{[1
]}

机构：

[1] TOHOKU UNIV, FAC SCI, DEPT PHYS, SENDAI, MIYAGI 980, JAPAN

来源：

PHYSICA B-CONDENSED MATTER | 1996年 / 219-20卷

关键词：

D O I：

10.1016/0921-4526(95)00793-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Two-magnon Raman scattering in one-dimensional S = 1/2 quantum spin antiferromagnets Ca2CuO3 and CuGeO3 is found to extend up to 2 pi J, where J is the exchange energy along the chain. The resonant multi-phonon peaks in Ca2CuO3 and undoped high T-C cuprates, and phonon peaks related to the spin-Peierls transition in CuGeO3 are highly asymmetric in the spin-phonon interactions, if the phonon energies are within the two-magnon band and polarizations of incident and scattered light are parallel to each other and to the chain or plane.

引用

页码：505 / 507

页数：3

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