Temperature-dependent x-ray diffuse scattering from single crystals of La2-xSrxCuO4.
Temperature-dependent x-ray diffuse scattering from single crystals of La2-xSrxCuO4.
复制标题
La2-xSrxCuO4 单晶的温度依赖性 X 射线漫散射。
DOI：
10.1103/physrevb.52.6829
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Uchida
中科院分区：
文献类型：
--
作者：
Dmowski;McQueeney;Egami;Feng;Sinha;Hinatsu;Uchida
研究了La{sub 2{minus}{ital x}}Sr{sub {ital x}CuO{sub 4}（{ital x}= 0. 10，0. 15，0. 20）单晶在{ital c}{sup *}轴附近的几个布拉格峰附近的X射线漫散射随温度的变化。虽然在室温下的漫散射是主要的声子散射，在低温下剩余的非声子漫散射清楚地看到。残余非声子散射的强度取决于温度和组合物的特征方式。结果表明，非声子散射是由于这些化合物中的电荷载流子引起的局部晶格畸变。
X-ray diffuse scattering from single crystals of La{sub 2{minus}{ital x}}Sr{sub {ital x}}CuO{sub 4} ({ital x}=0.10,0.15,0.20) was studied in the vicinity of several Bragg peaks near the {ital c}{sup *} axis as a function of temperature. While the diffuse scattering at room temperature is dominated by phonon scattering, at low temperatures residual nonphonon diffuse scattering is clearly seen. The intensity of the residual nonphonon scattering depends upon temperature and composition in a characteristic manner. It is suggested that the nonphonon scattering is due to local lattice distortions induced by charge carriers in these compounds.