Polaron coupling in quantum dot molecules

被引：17
作者：
Verzelen, O
Ferreira, R
Bastard, G
机构：
[1] Ecole Normale Super, Phys Mat Condensee Lab, CNRS, UMR 8551, F-75005 Paris, France
[2] Univ Paris 06, Ecole Normale Super, Phys Mat Condensee Lab, F-75005 Paris, France
[3] Univ Paris 07, Ecole Normale Super, Phys Mat Condensee Lab, F-75005 Paris, France
来源：
PHYSICAL REVIEW B | 2001年 / 64卷 / 07期
关键词：
D O I：
10.1103/PhysRevB.64.075315
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the calculation of polaron energies in InAs quantum dot molecules. Polaron effects are larger in vertical than in lateral molecules. The far infrared absorption associated with molecular polaron transitions is calculated. It may show prominent lines associated with inter dot polaron transitions. We have also calculated the polaron relaxation time to thermodynamical equilibrium when its lifetime is limited by the decay of its phonon component due to crystal anharmonicity.
引用
收藏
页数：6
相关论文
共 9 条
[1]   Quantum information processing with semiconductor macroatoms [J].
Biolatti, E ;
Iotti, RC ;
Zanardi, P ;
Rossi, F .
PHYSICAL REVIEW LETTERS, 2000, 85 (26) :5647-5650
[2]   Strong electron-phonon coupling regime in quantum dots:: Evidence for everlasting resonant polarons [J].
Hameau, S ;
Guldner, Y ;
Verzelen, O ;
Ferreira, R ;
Bastard, G ;
Zeman, J ;
Lemaître, A ;
Gérard, JM .
PHYSICAL REVIEW LETTERS, 1999, 83 (20) :4152-4155
[3]   Density of states and phonon-induced relaxation of electrons in semiconductor quantum dots [J].
Inoshita, T ;
Sakaki, H .
PHYSICAL REVIEW B, 1997, 56 (08) :R4355-R4358
[4]   Anharmonic decay of confined optical phonons in quantum dots [J].
Li, XQ ;
Arakawa, Y .
PHYSICAL REVIEW B, 1998, 57 (19) :12285-12290
[5]  
Shah J., 1992, HOT CARRIERS SEMICON
[6]   COHERENT TIME-RESOLVED INVESTIGATION OF LO-PHONON DYNAMICS IN GAAS [J].
VALLEE, F ;
BOGANI, F .
PHYSICAL REVIEW B, 1991, 43 (14) :12049-12052
[7]   TIME-RESOLVED INVESTIGATION OF COHERENT LO-PHONON RELAXATION IN III-V SEMICONDUCTORS [J].
VALLEE, F .
PHYSICAL REVIEW B, 1994, 49 (04) :2460-2468
[8]   Polaron lifetime and energy relaxation in semiconductor quantum dots [J].
Verzelen, O ;
Ferreira, R ;
Bastard, G .
PHYSICAL REVIEW B, 2000, 62 (08) :R4809-R4812
[9]  
VERZELEN O, IN PRESS JPN J APPL
1