Selective optical probing of the charge-density-wave phases in NbSe3
Selective optical probing of the charge-density-wave phases in NbSe3
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DOI：
10.1103/physrevb.75.115120
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发表时间：
2007-03
影响因子：
3.7
通讯作者：
K. Shimatake;Y. Toda;S. Tanda
中科院分区：
文献类型：
--
作者：
K. Shimatake;Y. Toda;S. Tanda
本文报道了用双色泵浦探针测量准一维NbSe3晶须晶体的超快单粒子动力学研究。通过将探针能量调整到1.5 eV左右，可以实现与两个电荷密度波CDW相之一相关的弛豫动力学的选择性增强，其中相应相变的温度依赖性显示出明显的异常。在相干CDW振荡中可能存在类似的选择性激发。
We report a study of the ultrafast single particle dynamics in quasi-one-dimensional NbSe3 whisker crystals using a two-color pump-probe measurement. A selective enhancement of the relaxation dynamics connected with one of the two charge-density-wave CDW phases was realized by tuning the probe energy to around 1.5 eV, in which the temperature dependence across the corresponding phase transition shows a pronounced anomaly. A similar selective excitation was possible in the coherent CDW oscillation.