Excitons in quantum-ring structures in a magnetic field: optical properties and persistent currents

被引：27

作者：

Govorova, AO ^{[1
]}

Kalameitsev, AV

Warburton, R

Karrai, K

Ulloa, SE

机构：

[1] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

[2] Ohio Univ, CMSS Program, Athens, OH 45701 USA

[3] Russian Acad Sci, Inst Semicond Phys, Siberian Branch, Novosibirsk 630090, Russia

[4] Heriot Watt Univ, Dept Phys, Edinburgh, Midlothian, Scotland

[5] LMU, Ctr NanoSci, D-80539 Munich, Germany

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2002年 / 13卷 / 2-4期

基金：

俄罗斯基础研究基金会;

关键词：

nanostructures; excitons; quantum rings; magnetic field;

D O I：

10.1016/S1386-9477(01)00542-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We study theoretically the magnetic-field effect on a neutral, but polarizable exciton confined in quantum-ring structures. For excitons with a nonzero dipole moment, a novel magnetic interference effect occurs: The ground state of an exciton confined in a finite-width quantum ring possesses a nonzero angular momentum with increasing normal magnetic field. This effect is accompanied by a suppression of the photoluminescence in well-defined magnetic-field intervals. The magnetic interference effect is calculated for type-II quantum dots and quantum rings. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：297 / 300

页数：4

共 50 条

[1] Magnetoexcitons in quantum-ring structures: a novel magnetic interference effect
Ulloa, SE
Govorov, AO
Kalameitsev, AV
Warburton, R
Karrai, K
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2002, 12 (1-4): : 790 - 793
[2] Magnetic field effects on quantum ring excitons
Song, JY
Ulloa, SE
PHYSICAL REVIEW B, 2001, 63 (12):
[3] Persistent current magnification in a double quantum-ring system
Orellana, PA
Pacheco, M
PHYSICAL REVIEW B, 2005, 71 (23)
[4] Electric and magnetic field effects on optical properties of excitons in quantum dots
Bassani, F
Silvestri, L
Czajkowski, G
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II, 2001, 87 : 1299 - 1300
[5] Optical properties of excitons in quantum well wires under the magnetic field
Kasapoglu, E
Sari, H
Sökmen, I
SURFACE REVIEW AND LETTERS, 2003, 10 (05) : 737 - 743
[6] PERSISTENT CURRENTS IN A MESOSCOPIC RING IN AN INHOMOGENEOUS MAGNETIC-FIELD
ZHOU, YC
LI, HZ
ZHI, SL
PHYSICS LETTERS A, 1994, 187 (01) : 74 - 78
[7] Electric and magnetic field effects on optical properties of excitons in parabolic quantum wells and quantum dots
Czajkowski, G
Bassani, F
Silvestri, L
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2001, 188 (04): : 1281 - 1290
[8] Excitonic properties of strained triple quantum-ring molecules
Tadic, M.
Peeters, F. M.
PHYSICAL REVIEW B, 2009, 79 (15):
[9] Spin states and persistent currents in a quantum ring with an embedded magnetic impurity
Sheng, J. S.
Chang, Kai
JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (02)
[10] Enhancement of persistent currents and magnetic fields in a two dimensional quantum ring
Vinod Prasad
Monika Arora
Scientific Reports, 13

← 1 2 3 4 5 →