Anisotropic charge modulation in ladder planes ofSr14−xCaxCu24O41
Anisotropic charge modulation in ladder planes ofSr14−xCaxCu24O41
复制标题
Sr14−xCaxCu24O41 阶梯平面中的各向异性电荷调制
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
T. Nagata
中科院分区：
文献类型：
--
作者：
T. Vuletić;T. Ivek;B. Korin;S. Tomić;B. Gorshunov;P. Haas;M. Dressel;J. Akimitsu;T. Sasaki;T. Nagata
Sr_14-xCa_xCu_24O_41 中梯子的电荷响应通过所有三个晶体方向的直流电阻率、低频介电常数和光谱来表征。除了沿腿的模式外，在 x=0、3 和 6 时，还可以在横档方向观察到集体电荷密度波屏蔽模式。对于 x=8 和 9，沿横档的电荷密度波响应完全消失，而沿腿的电荷密度波响应仍然存在。垂直于平面的传输始终以跳跃为主。
The charge response of the ladders in Sr_14-xCa_xCu_24O_41 is characterized by dc resistivity, low frequency dielectric and optical spectroscopy in all three crystallographic directions. The collective charge-density wave screened mode is observed in the direction of the rungs for x=0, 3 and 6, in addition to the mode along the legs. For x=8 and 9, the charge-density-wave response along the rungs fully vanishes, while the one along the legs persists. The transport perpendicular to the planes is always dominated by hopping.