Multi-exciton spectroscopy on a self-assembled InGaAs/GaAs quantum dot

F. Findeis; A. Zrenner; M. Markmann; G. Böhm; G. Abstreiter

doi:10.1016/S1386-9477(99)00340-9

Multi-exciton spectroscopy on a self-assembled InGaAs/GaAs quantum dot

F. Findeis, A. Zrenner, M. Markmann, G. Böhm, G. Abstreiter

Natural Sciences

Walter Schottky Institut

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

We report about spatially resolved magneto-optical experiments on a self-assembled InGaAs quantum dot. Using electron beam lithograpy for patterning a metal shadow mask we can isolate a single dot. This allows us to study the optical response of a single dot as a function of excitation power and magnetic field. We investigate the influence of many body interaction in the emission spectra for different exciton occupation numbers of the dot. The diamagnetic/orbital shift as well as Zeeman splitting in a magnetic field can be fully resolved and are used to identify the observed emission lines. Further we report on absorption properties of the quantum dot as a function of magnetic field. We analyze in detail the phonon-assisted absorption process connected with the GaAs LO-phonon 36 meV above the single-exciton ground state.

Original language	English
Pages (from-to)	354-358
Number of pages	5
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	7
Issue number	3
DOIs	https://doi.org/10.1016/S1386-9477(99)00340-9
State	Published - May 2000
Event	MSS9: The 9th International Conference on Modulated Semiconductor Structures - Fukuoka, Jpn Duration: 12 Jul 1999 → 16 Jul 1999

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title = "Multi-exciton spectroscopy on a self-assembled InGaAs/GaAs quantum dot",

abstract = "We report about spatially resolved magneto-optical experiments on a self-assembled InGaAs quantum dot. Using electron beam lithograpy for patterning a metal shadow mask we can isolate a single dot. This allows us to study the optical response of a single dot as a function of excitation power and magnetic field. We investigate the influence of many body interaction in the emission spectra for different exciton occupation numbers of the dot. The diamagnetic/orbital shift as well as Zeeman splitting in a magnetic field can be fully resolved and are used to identify the observed emission lines. Further we report on absorption properties of the quantum dot as a function of magnetic field. We analyze in detail the phonon-assisted absorption process connected with the GaAs LO-phonon 36 meV above the single-exciton ground state.",

author = "F. Findeis and A. Zrenner and M. Markmann and G. B{\"o}hm and G. Abstreiter",

year = "2000",

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doi = "10.1016/S1386-9477(99)00340-9",

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

issn = "1386-9477",

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note = "MSS9: The 9th International Conference on Modulated Semiconductor Structures ; Conference date: 12-07-1999 Through 16-07-1999",

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T1 - Multi-exciton spectroscopy on a self-assembled InGaAs/GaAs quantum dot

AU - Findeis, F.

AU - Zrenner, A.

AU - Markmann, M.

AU - Böhm, G.

AU - Abstreiter, G.

PY - 2000/5

Y1 - 2000/5

N2 - We report about spatially resolved magneto-optical experiments on a self-assembled InGaAs quantum dot. Using electron beam lithograpy for patterning a metal shadow mask we can isolate a single dot. This allows us to study the optical response of a single dot as a function of excitation power and magnetic field. We investigate the influence of many body interaction in the emission spectra for different exciton occupation numbers of the dot. The diamagnetic/orbital shift as well as Zeeman splitting in a magnetic field can be fully resolved and are used to identify the observed emission lines. Further we report on absorption properties of the quantum dot as a function of magnetic field. We analyze in detail the phonon-assisted absorption process connected with the GaAs LO-phonon 36 meV above the single-exciton ground state.

AB - We report about spatially resolved magneto-optical experiments on a self-assembled InGaAs quantum dot. Using electron beam lithograpy for patterning a metal shadow mask we can isolate a single dot. This allows us to study the optical response of a single dot as a function of excitation power and magnetic field. We investigate the influence of many body interaction in the emission spectra for different exciton occupation numbers of the dot. The diamagnetic/orbital shift as well as Zeeman splitting in a magnetic field can be fully resolved and are used to identify the observed emission lines. Further we report on absorption properties of the quantum dot as a function of magnetic field. We analyze in detail the phonon-assisted absorption process connected with the GaAs LO-phonon 36 meV above the single-exciton ground state.

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U2 - 10.1016/S1386-9477(99)00340-9

DO - 10.1016/S1386-9477(99)00340-9

M3 - Conference article

AN - SCOPUS:0033717292

SN - 1386-9477

VL - 7

SP - 354

EP - 358

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 3

T2 - MSS9: The 9th International Conference on Modulated Semiconductor Structures

Y2 - 12 July 1999 through 16 July 1999

ER -

Multi-exciton spectroscopy on a self-assembled InGaAs/GaAs quantum dot

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