Optical-absorption spectra of quantum dots and rings with a repulsive scattering centre

被引：148
作者：
Halonen, V [1 ]
Pietilainen, P [1 ]
Chakraborty, T [1 ]
机构：
[1] INST MATH SCI, MADRAS 600113, TAMIL NADU, INDIA
来源：
EUROPHYSICS LETTERS | 1996年 / 33卷 / 05期
关键词：
D O I：
10.1209/epl/i1996-00350-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have studied electron correlation effects in quantum dots and rings which include a repulsive scattering centre and are subjected to a perpendicular magnetic field. The results for the dipole-allowed absorption spectrum show good qualitative agreement with the observed magnetoplasmon dispersion in similar systems. This work provides a unified description of the electron correlations in quantum dots and quantum rings in a magnetic field. We also demonstrate that optical absorption is a direct route to explore the effects of impurity and interactions in a quantum ring.
引用
收藏
页码：377 / 382
页数：6
相关论文
共 37 条
[11]  
FUKUYAMA H, 1992, TRANSPORT PHENOMENA
[12]   ELECTRONIC STATES AND ADDITION SPECTRA OF PARABOLIC QUANTUM DOTS IN A MAGNETIC-FIELD [J].
HALONEN, V .
SOLID STATE COMMUNICATIONS, 1994, 92 (08) :703-705
[13]   EXCITONS IN A PARABOLIC QUANTUM DOT IN MAGNETIC-FIELDS [J].
HALONEN, V ;
CHAKRABORTY, T ;
PIETILAINEN, P .
PHYSICAL REVIEW B, 1992, 45 (11) :5980-5985
[14]  
IMRY Y, 1991, NATO ADV SCI I B-PHY, V254, P221
[15]   EXACTLY SOLVABLE MODEL OF INTERACTING PARTICLES IN A QUANTUM DOT [J].
JOHNSON, NF ;
PAYNE, MC .
PHYSICAL REVIEW LETTERS, 1991, 67 (09) :1157-1160
[16]   HOW REAL ARE COMPOSITE FERMIONS [J].
KANG, W ;
STORMER, HL ;
PFEIFFER, LN ;
BALDWIN, KW ;
WEST, KW .
PHYSICAL REVIEW LETTERS, 1993, 71 (23) :3850-3853
[17]   COLLECTIVE EXCITATIONS IN ANTIDOTS [J].
KERN, K ;
HEITMANN, D ;
GRAMBOW, P ;
ZHANG, YH ;
PLOOG, K .
PHYSICAL REVIEW LETTERS, 1991, 66 (12) :1618-1621
[18]  
LEGGETT AJ, 1991, NATO ADV SCI I B-PHY, V251, P297
[19]   ELECTRONIC-PROPERTIES OF ANISOTROPIC QUANTUM DOTS IN A MAGNETIC-FIELD [J].
MADHAV, AV ;
CHAKRABORTY, T .
PHYSICAL REVIEW B, 1994, 49 (12) :8163-8168
[20]   EXPERIMENTAL-OBSERVATION OF PERSISTENT CURRENTS IN A GAAS-ALGAAS SINGLE LOOP [J].
MAILLY, D ;
CHAPELIER, C ;
BENOIT, A .
PHYSICAL REVIEW LETTERS, 1993, 70 (13) :2020-2023
1234