Reduced electron relaxation rate in multielectron quantum dots

被引：32

作者：

Bertoni, A

Rontani, M

Goldoni, G

Molinari, E

机构：

[1] Univ Modena, INFM, Natl Res Ctr Nanostruct & Biosyst Surfaces, I-41100 Modena, Italy

[2] Univ Modena, Dipartimento Fis, I-41100 Modena, Italy

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.95.066806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use a configuration-interaction approach and the Fermi golden rule to investigate electron-phonon interaction in multielectron quantum dots. Lifetimes are computed in the low-density, highly correlated regime. We report numerical evidence that electron-electron interaction generally leads to reduced decay rates of excited electronic states in weakly confined quantum dots, where carrier relaxation is dominated by the interaction with longitudinal acoustic phonons.

引用

收藏

页数：4

相关论文

共 18 条

[1] Suppression of acoustic-phonon-induced electron transitions in coupled quantum dots [J].

Bertoni, A ;

Rontani, M ;

Goldoni, G ;

Troiani, F ;

Molinari, E .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2005, 26 (1-4) :427-431

[2] Field-controlled suppression of phonon-induced transitions in coupled quantum dots [J].

Bertoni, A ;

Rontani, M ;

Goldoni, G ;

Troiani, F ;

Molinari, E .

APPLIED PHYSICS LETTERS, 2004, 85 (20) :4729-4731

[3] PHONON-SCATTERING BETWEEN ZERO-DIMENSIONAL ELECTRONIC STATES - SPATIAL VERSUS LANDAU QUANTIZATION [J].

BOCKELMANN, U .

PHYSICAL REVIEW B, 1994, 50 (23) :17271-17279

[4]

Braskén M, 2002, MOL PHYS, V100, P911, DOI 10.1080/00268970110103138

[5] Crossover from fermi liquid to Wigner molecule behavior in quantum dots [J].

Egger, R ;

Häusler, W ;

Mak, CH ;

Grabert, H .

PHYSICAL REVIEW LETTERS, 1999, 82 (16) :3320-3323

[6] Allowed and forbidden transitions in artificial hydrogen and helium atoms [J].

Fujisawa, T ;

Austing, DG ;

Tokura, Y ;

Hirayama, Y ;

Tarucha, S .

NATURE, 2002, 419 (6904) :278-281

[7]

GARCIA CP, CONDMAT0506143

[8] 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

[9] Quantum control of electron-phonon scatterings in artificial atoms [J].

Hohenester, U ;

Stadler, G .

PHYSICAL REVIEW LETTERS, 2004, 92 (19) :196801-1

[10] ELECTRON RELAXATION IN A QUANTUM DOT - SIGNIFICANCE OF MULTIPHONON PROCESSES [J].

INOSHITA, T ;

SAKAKI, H .

PHYSICAL REVIEW B, 1992, 46 (11) :7260-7263