聚硅酸铜CuSiO3的振动光谱
Vibrational spectra of copper polysilicate, CuSiO3
摘要：
这是一个代表的第一个拉曼和红外/远红外光谱正交铜聚硅酸盐，CuSiO 3，在室温下测量的多晶样品和比较的光学声子与自旋Peierls化合物CuGeO 3观察到的。CuSiO 3代表准一维自旋= 1/2反铁磁海森堡链系统的另一个例子。给出了硅酸盐的模式分配。从达维多夫双峰的分析中，与锗酸盐相比，获得了硅酸盐的降低的层间结合强度，从而允许在低温下的不同磁响应。
英文摘要：
This is a representation of the first Raman and IR / FIR spectra for orthorhombic copper polysilicate, CuSiO3, measured at room temperature on polycrystalline samples and a comparison of the optical phonons with those observed for the spin-Peierls compound CuGeO3. CuSiO3 represents a further example of a quasi-one-dimensional spin = 1/2 antiferromagnetic Heisenberg chain system. A mode assignment for the silicate is given. From the analysis of the Davydov doublets a reduced intralayer- to-interlayer bond strength of the silicate in comparison to the germanate is obtained allowing for different magnetic response at low temperature.
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