Electron transport in TiO2 probed by THz time-domain spectroscopy -: art. no. 081101

被引:207
作者
Hendry, E
Wang, F
Shan, J
Heinz, TF
Bonn, M
机构
[1] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands
[2] Columbia Univ, Dept Phys, New York, NY 10027 USA
[3] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA
[4] FOM, Inst Atom & Mol Phys, NL-1098 SJ Amsterdam, Netherlands
来源
PHYSICAL REVIEW B | 2004年 / 69卷 / 08期
关键词
D O I
10.1103/PhysRevB.69.081101
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Electron transport in crystalline TiO2 (rutile phase) is investigated by frequency-dependent conductivity measurements using THz time-domain spectroscopy. Transport is limited by electron-phonon coupling, resulting in a strongly temperature-dependent electron-optical phonon scattering rate, with significant anisotropy in the scattering process. The experimental findings can be described by Feynman polaron theory within the intermediate coupling regime and allow for a determination of electron mobility.
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页数:4
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