Emission from neutral and charged excitons in a single quantum dot in a magnetic field

C. Schulhauser; R. J. Warburton; A. Högele; A. O. Govorov; K. Karrai; J. M. Garcia; B. D. Gerardot; P. M. Petroff

doi:10.1016/j.physe.2003.11.009

Emission from neutral and charged excitons in a single quantum dot in a magnetic field

C. Schulhauser, R. J. Warburton, A. Högele, A. O. Govorov, K. Karrai, J. M. Garcia, B. D. Gerardot, P. M. Petroff

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We report on optical spectroscopy of self-assembled InAs quantum dots in a magnetic field. We describe how we measure the emission characteristics of a single quantum dot (QD) in high magnetic fields at low temperature using a miniature, fiber-based confocal microscope. Example results are presented on a QD whose charge can be controlled using a field-effect device. For the uncharged, singly and doubly charged excitons we find a diamagnetism and the spin Zeeman effect. In contrast, for the triply-charged exciton we find a fundamentally different behavior. Anti-crossings in magnetic field imply that confined states of the QD are hybridized with Landau-like levels associated with the two-dimensional continuum. © 2003 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	184-188
Number of pages	5
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	21
Issue number	2-4
DOIs	https://doi.org/10.1016/j.physe.2003.11.009
Publication status	Published - Mar 2004
Event	Proceedings of the Eleventh International Conference on Modulation (MSS11) - Nara, Japan Duration: 14 Jul 2003 → 18 Jul 2003

Keywords

Magnetic properties
Photoluminescence
Quantum dot
Spectroscopy

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10.1016/j.physe.2003.11.009

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title = "Emission from neutral and charged excitons in a single quantum dot in a magnetic field",

abstract = "We report on optical spectroscopy of self-assembled InAs quantum dots in a magnetic field. We describe how we measure the emission characteristics of a single quantum dot (QD) in high magnetic fields at low temperature using a miniature, fiber-based confocal microscope. Example results are presented on a QD whose charge can be controlled using a field-effect device. For the uncharged, singly and doubly charged excitons we find a diamagnetism and the spin Zeeman effect. In contrast, for the triply-charged exciton we find a fundamentally different behavior. Anti-crossings in magnetic field imply that confined states of the QD are hybridized with Landau-like levels associated with the two-dimensional continuum. {\textcopyright} 2003 Elsevier B.V. All rights reserved.",

keywords = "Magnetic properties, Photoluminescence, Quantum dot, Spectroscopy",

author = "C. Schulhauser and Warburton, \{R. J.\} and A. H{\"o}gele and Govorov, \{A. O.\} and K. Karrai and Garcia, \{J. M.\} and Gerardot, \{B. D.\} and Petroff, \{P. M.\}",

year = "2004",

month = mar,

doi = "10.1016/j.physe.2003.11.009",

language = "English",

volume = "21",

pages = "184--188",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier B.V.",

number = "2-4",

note = "Proceedings of the Eleventh International Conference on Modulation (MSS11) ; Conference date: 14-07-2003 Through 18-07-2003",

}

TY - JOUR

T1 - Emission from neutral and charged excitons in a single quantum dot in a magnetic field

AU - Schulhauser, C.

AU - Warburton, R. J.

AU - Högele, A.

AU - Govorov, A. O.

AU - Karrai, K.

AU - Garcia, J. M.

AU - Gerardot, B. D.

AU - Petroff, P. M.

PY - 2004/3

Y1 - 2004/3

N2 - We report on optical spectroscopy of self-assembled InAs quantum dots in a magnetic field. We describe how we measure the emission characteristics of a single quantum dot (QD) in high magnetic fields at low temperature using a miniature, fiber-based confocal microscope. Example results are presented on a QD whose charge can be controlled using a field-effect device. For the uncharged, singly and doubly charged excitons we find a diamagnetism and the spin Zeeman effect. In contrast, for the triply-charged exciton we find a fundamentally different behavior. Anti-crossings in magnetic field imply that confined states of the QD are hybridized with Landau-like levels associated with the two-dimensional continuum. © 2003 Elsevier B.V. All rights reserved.

AB - We report on optical spectroscopy of self-assembled InAs quantum dots in a magnetic field. We describe how we measure the emission characteristics of a single quantum dot (QD) in high magnetic fields at low temperature using a miniature, fiber-based confocal microscope. Example results are presented on a QD whose charge can be controlled using a field-effect device. For the uncharged, singly and doubly charged excitons we find a diamagnetism and the spin Zeeman effect. In contrast, for the triply-charged exciton we find a fundamentally different behavior. Anti-crossings in magnetic field imply that confined states of the QD are hybridized with Landau-like levels associated with the two-dimensional continuum. © 2003 Elsevier B.V. All rights reserved.

KW - Magnetic properties

KW - Photoluminescence

KW - Quantum dot

KW - Spectroscopy

UR - https://www.scopus.com/pages/publications/1642283089

U2 - 10.1016/j.physe.2003.11.009

DO - 10.1016/j.physe.2003.11.009

M3 - Article

SN - 1386-9477

VL - 21

SP - 184

EP - 188

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 2-4

T2 - Proceedings of the Eleventh International Conference on Modulation (MSS11)

Y2 - 14 July 2003 through 18 July 2003

ER -

Emission from neutral and charged excitons in a single quantum dot in a magnetic field

Abstract

Keywords

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