Frequency dependent linear and non-linear response properties of electron impurity doped quantum dots: Influence of impurity location

被引：8
|
作者：
Sarkar, Kanchan [2 ]
Datta, Nirmal Kumar [1 ]
Ghosh, Manas [1 ]
机构：
[1] Visva Bharati Univ, Dept Chem, Chem Phys Sect, Birbhum 731235, W Bengal, India
[2] Indian Assoc Cultivat Sci, Dept Phys Chem, Kolkata 700032, India
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2010年 / 42卷 / 05期
关键词：
Quantum dot; Impurity doping; Frequency dependent polarizability; HYDROGENIC-DONOR STATES; DIPOLE POLARIZABILITIES ALPHA; COUPLED-CLUSTER CALCULATION; RARE-GAS ATOMS; 2ND HYPERPOLARIZABILITIES; NANOCRYSTALS; MOLECULES; MAGNESIUM; BINDING; GAMMA;
D O I：
10.1016/j.physe.2010.01.021
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We explore the pattern of frequency-dependent linear and non-linear optical (NLO) response of electron impurity doped 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 impurity location (x(0),Y-0) on the diagonal components of frequency dependent linear (alpha(xx) and alpha(yy)), and the first (beta(xxx), and beta yyy) NLO responses of the dot is computed through linear variational route. The non-linear polarizabilities undergo maximization at some typical oscillation frequency of the external field depending upon the impurity location. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：1659 / 1666
页数：8
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