Charge tuning in [111] grown GaAs droplet quantum dots

L. Bouet; M. Vidal; T. Mano; N. Ha; T. Kuroda; M. V. Durnev; M. M. Glazov; E. L. Ivchenko; X. Marie; T. Amand; K. Sakoda; G. Wang; B. Urbaszek

doi:10.1063/1.4894174

Charge tuning in [111] grown GaAs droplet quantum dots

L. Bouet, M. Vidal, T. Mano, N. Ha, T. Kuroda, M. V. Durnev, M. M. Glazov, E. L. Ivchenko, X. Marie, T. Amand, K. Sakoda, G. Wang, B. Urbaszek

科研成果: 期刊稿件 › 文章 › 同行评审

11 引用（Scopus）

摘要

We demonstrate charge tuning in strain free GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy on a GaAs(111)A substrate. Application of a bias voltage allows the controlled charging of the QDs from -3|e| to +2|e|. The resulting changes in QD emission energy and exciton fine-structure are recorded in micro-photoluminescence experiments at T=4K. We uncover the existence of excited valence and conduction states, in addition to the s-shell-like ground state. We record a second series of emission lines about 25meV above the charged exciton emission coming from excited charged excitons. For these excited interband transitions, a negative diamagnetic shift of large amplitude is uncovered in longitudinal magnetic fields.

源语言	英语
文章编号	082111
期刊	Applied Physics Letters
卷	105
期	8
DOI	https://doi.org/10.1063/1.4894174
出版状态	已出版 - 25 8月 2014
已对外发布	是

访问文件

10.1063/1.4894174

其它文件与链接

链接到 Scopus 的出版物

引用此

@article{6c733803a5294092bbce23eb68b12873,

title = "Charge tuning in [111] grown GaAs droplet quantum dots",

abstract = "We demonstrate charge tuning in strain free GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy on a GaAs(111)A substrate. Application of a bias voltage allows the controlled charging of the QDs from -3|e| to +2|e|. The resulting changes in QD emission energy and exciton fine-structure are recorded in micro-photoluminescence experiments at T=4K. We uncover the existence of excited valence and conduction states, in addition to the s-shell-like ground state. We record a second series of emission lines about 25meV above the charged exciton emission coming from excited charged excitons. For these excited interband transitions, a negative diamagnetic shift of large amplitude is uncovered in longitudinal magnetic fields.",

author = "L. Bouet and M. Vidal and T. Mano and N. Ha and T. Kuroda and Durnev, {M. V.} and Glazov, {M. M.} and Ivchenko, {E. L.} and X. Marie and T. Amand and K. Sakoda and G. Wang and B. Urbaszek",

year = "2014",

month = aug,

day = "25",

doi = "10.1063/1.4894174",

language = "English",

volume = "105",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "8",

}

TY - JOUR

T1 - Charge tuning in [111] grown GaAs droplet quantum dots

AU - Bouet, L.

AU - Vidal, M.

AU - Mano, T.

AU - Ha, N.

AU - Kuroda, T.

AU - Durnev, M. V.

AU - Glazov, M. M.

AU - Ivchenko, E. L.

AU - Marie, X.

AU - Amand, T.

AU - Sakoda, K.

AU - Wang, G.

AU - Urbaszek, B.

PY - 2014/8/25

Y1 - 2014/8/25

N2 - We demonstrate charge tuning in strain free GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy on a GaAs(111)A substrate. Application of a bias voltage allows the controlled charging of the QDs from -3|e| to +2|e|. The resulting changes in QD emission energy and exciton fine-structure are recorded in micro-photoluminescence experiments at T=4K. We uncover the existence of excited valence and conduction states, in addition to the s-shell-like ground state. We record a second series of emission lines about 25meV above the charged exciton emission coming from excited charged excitons. For these excited interband transitions, a negative diamagnetic shift of large amplitude is uncovered in longitudinal magnetic fields.

AB - We demonstrate charge tuning in strain free GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy on a GaAs(111)A substrate. Application of a bias voltage allows the controlled charging of the QDs from -3|e| to +2|e|. The resulting changes in QD emission energy and exciton fine-structure are recorded in micro-photoluminescence experiments at T=4K. We uncover the existence of excited valence and conduction states, in addition to the s-shell-like ground state. We record a second series of emission lines about 25meV above the charged exciton emission coming from excited charged excitons. For these excited interband transitions, a negative diamagnetic shift of large amplitude is uncovered in longitudinal magnetic fields.

UR - http://www.scopus.com/inward/record.url?scp=84907345486&partnerID=8YFLogxK

U2 - 10.1063/1.4894174

DO - 10.1063/1.4894174

M3 - Article

AN - SCOPUS:84907345486

SN - 0003-6951

VL - 105

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 082111

ER -

Charge tuning in [111] grown GaAs droplet quantum dots

摘要

访问文件

其它文件与链接

指纹

引用此