Observation of intersubband real-space transfer in GaAs/AlAs quantum-well structures due to Γ-X mixing

被引：11

作者：

Schmidt, SR

Zibik, EA

Seilmeier, A

Vorobjev, LE

Zhukov, AE

Ustinov, UM

机构：

[1] Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany

[2] St Petersburg State Tech Univ, St Petersburg 195251, Russia

[3] AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 09期

关键词：

D O I：

10.1063/1.1351841

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Gamma (2)-X-z1 intersubband dynamics in GaAs/AlAs quantum-well structures is investigated by time-resolved infrared pump and probe experiments. In the studied structure, the second Gamma level in GaAs is nearly resonant to the first X-z level in AlAs, resulting in elastic Gamma -X scattering. A biexponential behavior of ground-state recovery has been found with a time constant in the order of 1 ps for the Gamma (2)-Gamma (1) relaxation and a time constant of 7 ps (at 10 K), which represents the X-z-Gamma (2) transfer. (C) 2001 American Institute of Physics.

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页码：1261 / 1263

页数：3

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