Effect of vertical electric fields on exciton fine structure of GaAs natural quantum dots

S. Marcet, Tomohiro Kita, K. Ohtani, H. Ohno

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effect of vertical electric fields on the neutral exciton of GaAs "natural" quantum dots is investigated. A Stark effect with a quadratic field dependence up to 2 meV was observed and reveals a displacement of the excitonic wave function. The luminescencequenching limits the applied electric field range. No significative change on the fine structure splitting of the neutral exciton has been observed, suggesting that the lateral potential induced by the vertical electric field is too weak to modify the in-plane anisotropy of the exciton wave function.

Original languageEnglish
Pages (from-to)2069-2071
Number of pages3
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume40
Issue number6
DOIs
Publication statusPublished - 2008 Apr 1
Externally publishedYes

Fingerprint

Excitons
Semiconductor quantum dots
fine structure
quantum dots
Electric fields
excitons
Wave functions
electric fields
wave functions
Stark effect
Anisotropy
anisotropy
gallium arsenide
LDS 751

Keywords

  • Fine structure splitting
  • GaAs
  • Quantum dots
  • Spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Effect of vertical electric fields on exciton fine structure of GaAs natural quantum dots. / Marcet, S.; Kita, Tomohiro; Ohtani, K.; Ohno, H.

In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 40, No. 6, 01.04.2008, p. 2069-2071.

Research output: Contribution to journalArticle

@article{db4c85df9a4f4c2981839370742a08fe,
title = "Effect of vertical electric fields on exciton fine structure of GaAs natural quantum dots",
abstract = "The effect of vertical electric fields on the neutral exciton of GaAs {"}natural{"} quantum dots is investigated. A Stark effect with a quadratic field dependence up to 2 meV was observed and reveals a displacement of the excitonic wave function. The luminescencequenching limits the applied electric field range. No significative change on the fine structure splitting of the neutral exciton has been observed, suggesting that the lateral potential induced by the vertical electric field is too weak to modify the in-plane anisotropy of the exciton wave function.",
keywords = "Fine structure splitting, GaAs, Quantum dots, Spectroscopy",
author = "S. Marcet and Tomohiro Kita and K. Ohtani and H. Ohno",
year = "2008",
month = "4",
day = "1",
doi = "10.1016/j.physe.2007.09.106",
language = "English",
volume = "40",
pages = "2069--2071",
journal = "Physica E: Low-Dimensional Systems and Nanostructures",
issn = "1386-9477",
publisher = "Elsevier",
number = "6",

}

TY - JOUR

T1 - Effect of vertical electric fields on exciton fine structure of GaAs natural quantum dots

AU - Marcet, S.

AU - Kita, Tomohiro

AU - Ohtani, K.

AU - Ohno, H.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - The effect of vertical electric fields on the neutral exciton of GaAs "natural" quantum dots is investigated. A Stark effect with a quadratic field dependence up to 2 meV was observed and reveals a displacement of the excitonic wave function. The luminescencequenching limits the applied electric field range. No significative change on the fine structure splitting of the neutral exciton has been observed, suggesting that the lateral potential induced by the vertical electric field is too weak to modify the in-plane anisotropy of the exciton wave function.

AB - The effect of vertical electric fields on the neutral exciton of GaAs "natural" quantum dots is investigated. A Stark effect with a quadratic field dependence up to 2 meV was observed and reveals a displacement of the excitonic wave function. The luminescencequenching limits the applied electric field range. No significative change on the fine structure splitting of the neutral exciton has been observed, suggesting that the lateral potential induced by the vertical electric field is too weak to modify the in-plane anisotropy of the exciton wave function.

KW - Fine structure splitting

KW - GaAs

KW - Quantum dots

KW - Spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=41349097272&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41349097272&partnerID=8YFLogxK

U2 - 10.1016/j.physe.2007.09.106

DO - 10.1016/j.physe.2007.09.106

M3 - Article

AN - SCOPUS:41349097272

VL - 40

SP - 2069

EP - 2071

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

SN - 1386-9477

IS - 6

ER -