Frequency-dependent linear and non-linear response properties of single carrier quantum dots: Role of effective mass and anharmonicity in the confinement potential

被引：5
|
作者：
Mandal, Parikshit [1 ]
Ghosh, Manas [1 ]
机构：
[1] Visva Bharati Univ, Dept Chem, Chem Phys Sect, Santini Ketan 731235, W Bengal, India
来源：
PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 18期
关键词：
artificial atoms; confinement potential; anharmonicity; effective mass; frequency-dependent optical response properties;
D O I：
10.1016/j.physb.2008.02.035
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We explore the pattern of frequency-dependent linear and non-linear optical (NLO) response of one electron quantum dots harmonically confined in two dimensions. For some fixed values of transverse magnetic field strength (omega(c)), and harmonic confinement potential (omega(0)), the influence of effective mass (m*) of the system and the symmetry breaking anharmonic interaction on the frequency-dependent linear (alpha), and the first (beta), and second (gamma) NLO responses of the dot is computed through linear variational route. The investigation reveals interesting roles played by the anharmonic interaction and effective mass in modulating the response properties. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：2967 / 2978
页数：12
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