Optical absorption spectra in SrCu2O3 two-leg spin ladder -: art. no. 134432

被引：4
|
作者：
Haga, N [1 ]
Suga, S [1 ]
机构：
[1] Osaka Univ, Dept Appl Phys, Osaka 5650871, Japan
来源：
PHYSICAL REVIEW B | 2003年 / 67卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.67.134432
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We calculate the phonon-assisted optical-absorption spectra in SrCu2O3 two-leg spin-ladder systems. The results for two models proposed for SrCu2O3 are compared. In the model including the effects of a cyclic four-spin interaction, the shoulder structure appears at similar to978 cm(-1) and the peak appears at similar to1975 cm(-1) in the spectrum for polarization of the electric field parallel to the legs. In the other model which describes a pure two-leg ladder, the peak appears around the lower edge of the spectrum at similar to1344 cm(-1). The feature can be effective in determining the proper model for SrCu2O3.
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页数：4
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