Localization of excitons in weakly disordered semiconductor structures: A model study

被引：2

作者：

Gogh, N. ^{[1
,2
]}

Thomas, P. ^{[1
,2
]}

Kuznetsova, I. ^{[3
]}

Meier, T. ^{[3
]}

Varga, I. ^{[4
]}

机构：

[1] Univ Marburg, Dept Phys, D-35032 Marburg, Germany

[2] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany

[3] Univ Gesamthsch Paderborn, Fak Nat Wissensch, Dept Phys, D-33098 Paderborn, Germany

[4] Budapesti Muszaki & Gazdasagtud Egyet, Fizikai Intezet, H-1111 Budapest, Hungary

来源：

ANNALEN DER PHYSIK | 2009年 / 18卷 / 12期

关键词：

Disordered semiconductor heterostructures; excitons; localizations; Fano-coupling; FOURIER-TRANSFORM SPECTROSCOPY; SIGNATURES;

D O I：

10.1002/andp.200910382

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Localization of the center-of-mass (com) motion of an exciton in a disordered semiconductor structure is studied theoretically by focusing on nonlinear optical spectroscopy. A one-dimensional tight-binding model with diagonal disorder is applied and the Coulomb interaction is treated consistently. In the ordered situation the center-of-mass momentum (K) selection rule leads to only the lowest transition for K = 0. The break down of the com-K-selection rule produces the well known asymmetric excitonic lines of disordered semiconductors. The coupling between the lowest dominant transition to this modified com-continuum yields Fano-like features in the nonlinear spectra. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：905 / 909

页数：5

共 5 条

[1] Modeling excitonic line shapes in weakly disordered semiconductor nanostructures
Kuznetsova, I.
Gogh, N.
Foerstner, J.
Meier, T.
Cundiff, S. T.
Varga, I.
Thomas, P.
PHYSICAL REVIEW B, 2010, 81 (07):
[2] Separating Homogeneous and Inhomogeneous Line Widths of Heavy- and Light-Hole Excitons in Weakly Disordered Semiconductor Quantum Wells
Bristow, Alan D.
Zhang, Tianhao
Siemens, Mark E.
Cundiff, Steven T.
Mirin, R. P.
JOURNAL OF PHYSICAL CHEMISTRY B, 2011, 115 (18): : 5365 - 5371
[3] Localization of excitons in ultrathin CdS/ZnS quantum structures
Petri, W
Hetterich, M
Woggon, U
Markle, C
Dinger, A
Grun, M
Klingshirn, C
Kummell, T
Bacher, G
Forchel, A
JOURNAL OF CRYSTAL GROWTH, 1998, 184 : 320 - 324
[4] Localization of large polarons in the disordered Holstein model
Tozer, Oliver Robert
Barford, William
PHYSICAL REVIEW B, 2014, 89 (15)
[5] Numerical study of Anderson localization of terahertz waves in disordered waveguides
Lapointe, C. P.
Zakharov, P.
Enderli, F.
Feurer, T.
Skipetrov, S. E.
Scheffold, F.
EPL, 2014, 105 (03)

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