Temperature-dependent ultrafast carrier and phonon dynamics of topological insulator Bi1.5Sb0.5Te1.8Se1.2

• Main Authors: Cheng, Liang, La-o-vorakiat, Chan, Tang, Chi Sin, Nair, Saritha K., Xia, Bin, Wang, Lan, Zhu, Jian-Xin, Chia, Elbert E. M.
• 其他作者: School of Physical and Mathematical Sciences
• 格式: Article
• 語言: English
• 出版: 2014
• 主題: DRNTU::Science::Physics
• 在線閱讀: https://hdl.handle.net/10356/103713; http://hdl.handle.net/10220/20019

Using ultrafast optical pump-probe technique, we studied the temperature-dependent carrier and phonon dynamics of the topological insulator Bi1.5Sb0.5Te1.8Se1.2 single-crystal from 10 K to 300 K. Two relaxation processes of carriers and coherent optical/acoustic phonons have been observed. By using...