Collective effects in intersubband transitions

被引：14

作者：

Warburton, RJ

Weilhammer, K

Jabs, C

Kotthaus, JP

Thomas, M

Kroemer, H

机构：

[1] LMU, Ctr NanoSci, D-80539 Munich, Germany

[2] LMU, Sekt Phys, D-80539 Munich, Germany

[3] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA

来源：

PHYSICA E | 2000年 / 7卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

intersubband resonance; linewidth; collective effects; InAs;

D O I：

10.1016/S1386-9477(99)00285-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We present experiments on the intersubband resonance (ISR) in InAs/AlSb quantum wells with the aim of understanding the linewidth. We find that fluctuations in the well width dominate the scattering right up to temperatures well beyond room temperature. ISR with two occupied subbands is used to gain insight into these phenomena. We find clear evidence for Landau damping and we argue generally that Landau damping represents the crucial scattering mechanism for all ISRs. The argument is strengthened by considering the intrasubband plasmon, where we also find evidence for Landau damping, in this case in a magnetic field. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：191 / 199

页数：9

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