Dephasing in modulation-doped quantum structures probed by THz time-domain spectroscopy

被引：23

作者：

Ascazubi, R ^{[1
]}

Akin, OC

Zaman, T

Kersting, R

Strasser, G

机构：

[1] Rensselaer Polytech Inst, Dept Phys, Troy, NY 12180 USA

[2] TU Wien, Inst Solid State Elect, A-1040 Vienna, Austria

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 23期

关键词：

D O I：

10.1063/1.1524297

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dephasing of intersubband transitions in semiconductor heterostructures was investigated by time-resolved THz spectroscopy. Single quantum structures show dephasing rates, which are nearly identical to scattering rates obtained by conventional Hall measurements and allow insight into the dephasing dynamics. In multiple quantum wells, inhomogeneous broadening of the density of states is the main dephasing mechanism. (C) 2002 American Institute of Physics.

引用

页码：4344 / 4346

页数：3

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